A device for installing and removing a stabilizing column assembly of a drift drill, a splicing rod and a top plate

Abstract

The application provides a device for adding and removing a stable column assembly of a drift drill, a plug-in rod and a top-connection disc, which comprises a base, a plurality of extension rods, a roller beam frame and a ball clamping device; the ball clamping device comprises a sleeve, the upper part of the sleeve is sleeved in a shell, a limiting cap is further connected and installed on the shell through screw threads, the limiting cap is sleeved outside the sleeve, and the lower part of the sleeve extends out of the limiting cap; a plurality of steel balls are arranged in the annular space formed among the limiting cap, the sleeve and the shell, the radial inner side of the steel balls can protrude into the inner wall of the sleeve through the arc-shaped recess holes formed on the lower side wall of the sleeve; and the plug-in rod and the top-connection disc are both provided with arc-shaped grooves. The device for adding and removing the stable column assembly is used to replace manual adding and removing of the plug-in rod and the top-connection disc, and the problems of high labor intensity and high danger of climbing operation are solved. The conical column is fixedly connected to the upper end of the top-connection disc with the arc-shaped groove, the friction between the top-connection disc and the top plate is increased, and the stability is more reliable.

Description

Technical Field

[0001] This invention belongs to the field of coal mine tunnel drilling technology, and relates to a stabilizing column assembly, specifically to a loading and unloading device, a connecting rod, and a top plate for a stabilizing column assembly of a tunnel drilling rig. Background Technology

[0002] like Figure 1 As shown, during tunnel drilling, vertically supported columns are typically used to stabilize the rig. These columns are installed at the four corners of the rig's body. In operation, the upper end of the column presses against the tunnel roof, and the lower end presses against the tunnel floor. The column consists of a double-acting hydraulic cylinder, connectors, plug-in rods, and a top-mounting plate. The plug-in rods are connected to each other and to the top-mounting plate via plug-in joints. The plug-in rods are of fixed length, typically 400mm, 600mm, or 1000mm. The number of plug-in rods installed varies depending on the tunnel height at the construction site. Installation of the plug-in rods is entirely manual. When the tunnel height exceeds 3 meters, installation requires working at height. Due to the significant weight of the plug-in rods, the installation process is time-consuming, labor-intensive, and inherently dangerous. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a loading and unloading device, a connecting rod and a top plate for stabilizing the column assembly of a tunnel drilling rig, so as to solve the safety problems and the high labor intensity of manual drilling rig stabilization in the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A loading and unloading device for a stabilizing column assembly of a tunnel drilling rig includes a base, multiple extension rods, a roller beam frame, and a ball clamp.

[0006] The ball clamp includes a sleeve, the upper part of which is fitted inside a housing. A limit cap is threadedly installed outside the housing, fitted onto the sleeve. The lower part of the sleeve extends out of the limit cap. The lower part of the inner wall of the limit cap has an inner conical surface, and the inner wall of the limit cap is cylindrical. Multiple steel balls are arranged in the annular space formed between the limit cap, the sleeve, and the housing. The radially inner side of the steel balls can protrude into the inner wall of the sleeve through an arc-shaped recess formed on the lower side wall of the sleeve.

[0007] The top of the sleeve is connected to one end of a pull rod, and the other end of the pull rod passes through the through hole at the upper end of the sleeve and the through hole at the upper end of the outer shell and is connected to the cylinder rod of the oil cylinder through a connecting sleeve. The oil cylinder is fixedly installed on the top of the outer shell. The retraction of the cylinder rod can drive the sleeve to move upward. A return spring is installed in the cavity between the outer top surface of the sleeve and the inner top surface of the outer shell. The return spring is sleeved around the pull rod.

[0008] The present invention also has the following technical features:

[0009] When the cylinder rod of the hydraulic cylinder is fully retracted, the steel ball can move freely between the arc-shaped recess and the cylindrical surface, and the ball clamp is in the open state; when the hydraulic cylinder is not in motion, the return force of the return spring pushes the sleeve to the lowest end, and under the action of the inner conical surface, the steel ball moves towards the radial center of the sleeve and is clamped in the arc-shaped recess on the sleeve, and the ball clamp is in the clamped state.

[0010] The base includes legs, a base plate is mounted on the legs, an upper plate is mounted on the base plate via a rotary actuator, and a gear assembly, guide tube, and winch are fixedly mounted on the upper plate.

[0011] The base plate, rotary driver, and upper plate are coaxially provided with a central through hole, which is connected to the guide tube. The extension rod is inserted into the hollow guide tube from the lower end of the base plate through the central through hole.

[0012] The extension rod includes a circular tube open at both ends, which is divided into an integrally formed upper large-diameter section and a lower small-diameter section. Adjacent extension rods are connected by inserting the large-diameter section and the small-diameter section. A rack is fixedly installed axially on the outer wall of the large-diameter section. A limiting groove is opened on the side of the guide tube, and the rack is engaged in the limiting groove so that the extension rod can only move axially up and down in the guide tube.

[0013] During the rotation of the upper plate driven by the rotary driver, the through groove transmits force to the side of the rack of the extension rod, causing the extension rod to rotate; the gear in the gear assembly meshes with the rack, and the vertical lifting and lowering of the extension rod is realized under the drive of the gear assembly.

[0014] The roller beam frame includes a beam frame, with a connector at the lower left end of the beam frame, which is inserted into the larger diameter pipe section at the upper part of the extension rod; rollers are respectively installed at the left and right ends of the beam frame, and the wire rope of the winch passes around the rollers and suspends the ball clamp.

[0015] This invention also protects a plug-in rod for a stabilizing column assembly of a tunnel drilling rig, comprising an integrally formed narrow-diameter tube and a wide-diameter tube. The outer wall of the upper end section of the wide-diameter tube is provided with an arc-shaped groove to form a plug-in rod with an arc-shaped groove. The radius of the arc-shaped groove is the same as the radius of the steel ball in the ball clamp, and the steel ball can be clamped in the arc-shaped groove of the plug-in rod with an arc-shaped groove to achieve the clamping of the plug-in rod with an arc-shaped groove by the ball clamp.

[0016] The ball clamp is the ball clamp used in the loading and unloading device for stabilizing the column assembly of the tunnel drilling rig as described above.

[0017] This invention also protects a top plate for a stabilizing column assembly of a tunnel drilling rig, comprising an annular plate. The lower end of the annular plate is connected to corresponding stiffening plates via multiple support columns. The stiffening plates are evenly distributed and fixedly connected to the lower outer wall of a pipe body. The pipe body and the annular plate are coaxially arranged, and the upper end of the pipe body is flush with the upper end of the annular plate. An arc-shaped groove is provided on the upper outer wall of the pipe body to form a top plate with an arc-shaped groove. The radius of the arc-shaped groove is the same as the radius of the steel ball in the ball clamp, and the steel ball can be clamped in the arc-shaped groove of the top plate with an arc-shaped groove to achieve the clamping of the top plate with an arc-shaped groove by the ball clamp.

[0018] The ball clamp is the ball clamp used in the loading and unloading device for stabilizing the column assembly of the tunnel drilling rig as described above.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] (I) The present invention uses a stable column assembly loading and unloading device to replace manual loading and unloading of the plug rod and the top plate, which solves the problems of high labor intensity and high danger of working at height.

[0021] (II) The present invention has a conical column fixedly connected to the upper end of the top plate with an arc groove, which increases the friction between the top plate and the top plate, making it more stable and reliable.

[0022] (III) The open-end sleeve at the lower end of the ball clamp of the present invention can compensate for positional accuracy within a certain range, and the operation of adding and removing the plug rod and connecting the top plate is simple and convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the installation location and structural components of the column.

[0024] Figure 2 This is a schematic diagram of the existing plug-in rod structure.

[0025] Figure 3 This is a schematic diagram of the existing top plate structure.

[0026] Figure 4 This is a schematic diagram of the overall structure of the loading and unloading device used for the stabilizing column assembly of a tunnel drilling rig.

[0027] Figure 5 for Figure 4 Axonometric drawing.

[0028] Figure 6 This is a schematic diagram of the base structure.

[0029] Figure 7 for Figure 6 Axonometric drawing.

[0030] Figure 8 This is a schematic diagram of the extended rod.

[0031] Figure 9 This is a schematic diagram of a roller beam frame structure.

[0032] Figure 10 This is a schematic diagram of the ball clamping mechanism in the locked state.

[0033] Figure 11 This is a schematic diagram of the limit cap structure.

[0034] Figure 12 This is a schematic diagram of the sleeve structure.

[0035] Figure 13 This is a schematic diagram of the ball clamp in the released state.

[0036] Figure 14 This is a schematic diagram of a connector rod with an arc-shaped groove.

[0037] Figure 15 This is a schematic diagram of a top plate structure with an arc-shaped groove.

[0038] Figure 16 for Figure 15 Axonometric drawing.

[0039] Figure 17 This is a schematic diagram of the structure with the ball clamp fastened to the arc-shaped groove insertion rod.

[0040] Figure 18 This is a schematic diagram of the structure when the ball clamp is tightened with the arc-shaped groove connecting to the top plate.

[0041] The labels in the diagram represent the following: 1-tracked chassis, 2-pillar, 3-stabilizing cylinder, 4-adapter joint, 5-connector rod, 6-top plate, 7-small diameter tube, 8-handle, 9-large diameter tube, 10-connector, 11-plate, 12-base, 13-extension rod, 14-roller beam frame, 15-ball catcher, 16-outrigger, 17-base plate, 18-rotary actuator, 19-upper plate, 20-gear assembly, 21-guide tube, 22-winch, 23-round tube, 24-rack, 25-... 26-Pin hole, 27-Second pin hole, 28-Roller, 29-Beam frame, 30-Sleeve, 31-Steel ball, 32-Limit cap, 33-Outer shell, 34-Reset spring, 35-Pull rod, 36-Connecting sleeve, 37-Oil cylinder, 38-Lifting ring, 39-Lifting ring, 40-Inner conical surface, 41-Arc groove, 42-Annular plate, 43-Support column, 44-Firming plate, 45-Pipe body, 46-Cylindrical surface, 47-Arc recess, 48-Plug rod with arc groove, 49-Top plate with arc groove.

[0042] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, all components in this invention are components known in the prior art.

[0044] The existing technology is as follows:

[0045] like Figure 1 As shown, four columns 2 are installed at the four corners of the tracked vehicle body 1. Each column 2 consists of a stabilizing cylinder 3, a conversion joint 4, several connecting rods 5, and a top-mounting plate 6. After all parts are connected, high-pressure oil is introduced into the stabilizing cylinder 3, driving it to tighten the column. The number of connecting rods 5 varies depending on the tunnel height. The top-mounting plate 6 is connected to the uppermost connecting rod 5. Its function is to increase the contact area between the column 2 and the roof, making the column 2 more stable and secure.

[0046] like Figure 2 As shown, the connector 5 consists of a narrow-diameter tube 7, a handle 8, and a wide-diameter tube 9. The inner diameter of the wide-diameter tube 9 is the same as the outer diameter of the narrow-diameter tube 7. When multiple connectors 5 are connected, the narrow-diameter tube 7 of the next connector 5 is inserted into the wide-diameter tube 9 of the previous connector 5, and so on.

[0047] like Figure 3 As shown, the top plate 6 consists of a connector 10 and a plate body 11. The connector 10 can be inserted into the large-diameter tube body 9 of the connector rod 5.

[0048] In view of the problems in the existing technology that require manual installation of the plug-in rod and the top plate when the tunnel is high, which requires climbing to work, has a high risk factor and high labor intensity, the present invention provides a device for adding and removing the column assembly for stabilizing tunnel drilling rigs, as well as the plug-in rod and the top plate.

[0049] The loading and unloading device of the present invention includes a base, an extension rod, a roller beam frame, and a ball clamp. The base supports the entire loading and unloading device and has the functions of installing the extension rod, rotating the roller beam frame, and lifting the ball clamp. The extension rod is used to raise and lower the height of the roller beam frame. The roller beam frame is used to guide the wire rope for lifting the ball clamp. The ball clamp is used to clamp the extension rod and the top plate.

[0050] The plug-in rod and top plate of the present invention can be mechanically added and removed when the roadway is at a high height, reducing the labor intensity of workers and avoiding the safety hazards of working at height.

[0051] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0052] Example 1:

[0053] This embodiment provides a loading and unloading device for a stabilizing column assembly of a tunnel drilling rig, such as...Figure 4 and 5 As shown, it consists of a base 12, multiple extension rods 13, a roller beam frame 14, and a ball clamp 15.

[0054] like Figure 6 and Figure 7 As shown, the base 12 includes legs 16, a base plate 17 is mounted on the legs 16, an upper plate 19 is mounted on the base plate 17 via a rotary actuator 18, and a gear assembly 20, a guide tube 21 and a winch 22 are fixedly mounted on the upper plate 19.

[0055] like Figure 4 and 5 As shown, a central through hole is coaxially formed on the base plate 17, the rotary actuator 18, and the upper plate 19. The central through hole is connected to the guide tube 21. The extension rod 13 is inserted into the hollow guide tube 21 from the lower end of the base plate 17 through the central through hole.

[0056] like Figure 8 As shown, the extension rod 13 includes a circular tube 23 open at both ends. The circular tube 23 is divided into an integrally formed upper large-diameter tube section and a lower small-diameter tube section. Adjacent extension rods 13 are connected by inserting the large-diameter tube section and the small-diameter tube section. A rack 24 is fixedly provided axially on the outer wall of the large-diameter tube section. A limiting groove is opened on the side of the guide tube 21. The rack 24 is engaged in the limiting groove so that the extension rod 13 can only move axially up and down in the guide tube 21.

[0057] During the rotation of the upper plate 19 driven by the rotary actuator 18, the through slot transmits force to the side of the rack 24 of the extension rod 13, causing the extension rod 13 to rotate; the gear in the gear assembly 20 meshes with the rack 24, and the vertical lifting and lowering of the extension rod 13 is achieved under the drive of the gear assembly 20.

[0058] Preferably, both the large-diameter pipe section and the small-diameter pipe section are provided with pin holes 25, which are used for plug-in connection and then positioning by pin.

[0059] like Figure 9 As shown, the roller beam frame 14 includes a beam frame 29. A connector 26 is provided at the lower left end of the beam frame 29. The connector 26 is inserted into the large-diameter pipe section at the upper part of the extension rod 13. Rollers 28 are provided at the left and right ends of the beam frame 29 respectively. The wire rope of the winch 22 passes around the rollers 28 and suspends the ball clamp 15.

[0060] Preferably, the insertion tube 26 is provided with a second pin hole 27, through which a pin passes through the pin hole 25 and the second pin hole 27.

[0061] like Figure 10 , Figure 11 , Figure 12 and Figure 13As shown, the ball clamp 15 includes a sleeve 30, the upper part of which is fitted inside a housing 33. A limit cap 32 is also installed outside the housing 33 via a threaded connection. The limit cap 32 is fitted outside the sleeve 30, and the lower part of the sleeve 30 extends out of the limit cap 32. The lower part of the inner wall of the limit cap 32 is provided with an inner conical surface 40, and the inner wall of the limit cap 32 is a cylindrical surface 46. Multiple steel balls 31 are arranged in the annular space formed between the limit cap 32, the sleeve 30, and the housing 33. The radially inner side of the steel balls 31 can protrude into the inner wall of the sleeve 30 through an arc-shaped recess 47 opened on the lower side wall of the sleeve 30.

[0062] One end of a pull rod 35 is connected to the top of the sleeve 30. The other end of the pull rod 35 passes through the through hole at the upper end of the sleeve 30 and the through hole at the upper end of the outer shell 33 and is connected to the cylinder rod of the hydraulic cylinder 37 through the connecting sleeve 36. The hydraulic cylinder 37 is fixedly installed on the top of the outer shell 33. The retraction of the cylinder rod of the hydraulic cylinder 37 can drive the sleeve 30 to move upward. A return spring 34 is installed in the cavity between the outer top surface of the sleeve 30 and the inner top surface of the outer shell 33. The return spring 34 is sleeved around the pull rod 35.

[0063] Specifically, when the cylinder rod of the hydraulic cylinder 37 is fully retracted, the steel ball 31 can move freely between the arc-shaped recess 47 and the cylindrical surface 46, and the ball clamp 15 is in the open state; when the hydraulic cylinder 37 is not in motion, the return force of the return spring 34 pushes the sleeve 30 to the lowest end, and under the action of the inner conical surface 40, the steel ball 31 moves toward the radial center of the sleeve 30 and is clamped in the arc-shaped recess 47 opened on the sleeve 30, and the ball clamp 15 is in the clamped state.

[0064] As a preferred embodiment, there are 4 steel balls 31.

[0065] As a preferred embodiment, the lower end of the sleeve 30 is open, which facilitates the installation of the insertion rod or the top plate.

[0066] As a preferred embodiment, a lifting ring (38) is installed on the outer shell (33), and a lifting ring (39) is provided on the lifting ring. The lifting ring (39) is connected to the wire rope of the winch (22).

[0067] Example 2:

[0068] This embodiment provides a plug-in rod for a stabilizing column assembly of a tunnel drilling rig, such as... Figure 14 As shown, it includes an integrally formed small-diameter pipe body 7 and a large-diameter pipe body 9. The outer wall of the upper end section of the large-diameter pipe body 9 is provided with an arc-shaped groove 41 to form an arc-shaped grooved plug-in rod 48. The radius of the arc-shaped groove 41 is the same as the radius of the steel ball 31 in the ball clamp 15. The steel ball 31 can be clamped in the arc-shaped groove 41 of the arc-shaped grooved plug-in rod 48 to realize the clamping of the ball clamp 15 on the arc-shaped grooved plug-in rod 48.

[0069] As a preferred embodiment, the ball clamp 15 is the ball clamp 15 used in the loading and unloading device for stabilizing the column assembly of the tunnel drilling rig given in Embodiment 1.

[0070] Example 3:

[0071] This embodiment provides a top-mounted plate for a stabilizing column assembly of a tunnel drilling rig, such as... Figure 15 and Figure 16 As shown, it includes an annular plate 42. The lower end of the annular plate 42 is connected to a corresponding stiffening plate 44 by multiple support columns 43. The multiple stiffening plates 44 are evenly distributed and fixedly connected to the lower outer wall of the tube body 45. The tube body 45 and the annular plate 42 are coaxially arranged. The upper end of the tube body 45 is flush with the upper end of the annular plate 42. An arc-shaped groove 41 is provided on the upper outer wall of the tube body 45 to form an arc-shaped groove receiving plate 49. The radius of the arc-shaped groove 41 is the same as the radius of the steel ball 31 in the ball clamp 15. The steel ball 31 can be clamped in the arc-shaped groove 41 of the arc-shaped groove receiving plate 49 to realize the clamping of the ball clamp 15 on the arc-shaped groove receiving plate 49.

[0072] As a preferred embodiment, the ball clamp 15 is the ball clamp 15 used in the loading and unloading device for stabilizing the column assembly of the tunnel drilling rig given in Embodiment 1.

[0073] As a preferred embodiment, there are four support pillars 43.

[0074] As a preferred embodiment, the top plate 49 with arc-shaped groove and the plug rod 48 with arc-shaped groove given in Embodiment 2 are connected by plugging.

[0075] As a preferred embodiment, a conical column is fixedly provided at the upper end of the annular plate 42 to increase the friction between the top plate and the roadway roof.

[0076] Example 4:

[0077] This embodiment provides a method for attaching and removing connecting rods and top plates using an attachment / removal device. When using the attachment / removal device provided in Embodiment 1 to attach and remove the arc-grooved connecting rod 48 provided in Embodiment 2 and the arc-grooved top plate 49 provided in Embodiment 3, the attachment / removal device is placed near the column 2. The attachment / removal device has the function of lifting the arc-grooved connecting rod 48 and the arc-grooved top plate 49 from the ground and attaching them to the column 2, and also has the function of lifting the arc-grooved connecting rod 48 and the arc-grooved top plate 49 from the column 2 and transporting them to the ground. By attaching different numbers of extension rods 13, the roller beam frame 14 can be lifted to a certain height, and under the action of the winch 22, the arc-grooved connecting rod 48 and the arc-grooved top plate 49 can be transported to a designated height.

[0078] like Figure 17As shown, after the ball clamp 15 clamps the rod with the arc groove 48, the steel ball 31 in the ball clamp 15 is clamped in the arc groove 41 of the rod with the arc groove 48.

[0079] like Figure 18 As shown, after the ball clamp 15 clamps the top plate 49 with the arc groove, the steel ball 31 in the ball clamp 15 is clamped in the arc groove 41 of the top plate 49 with the arc groove.

[0080] According to the above technical solution, the process of adding the arc-grooved plug rod 48 and the arc-grooved top plate 49 is as follows:

[0081] Step 1: Place the loading / unloading device next to the drilling rig column. When the rotary drive 18 rotates the upper part of the loading / unloading device and the ball chuck 15, the center of the drilling rig column should be on the arc trajectory of the ball chuck 15.

[0082] Step two: Add a certain number of extension rods 13 to the loading and unloading device so that the ball clamp 15 can be raised to a height that meets the requirements for adding the arc-groove plug rod 48. A conversion joint 4 is installed on the stabilizing cylinder 3 of the drilling rig column.

[0083] Step 3: Install the slotted connector rod 48 into the ball clamp 15. Control the loading and unloading device to move the slotted connector rod 48 to the upper end of the drilling rig column. Control the winch 22 to lower the slotted connector rod 48 and insert it into the lower end connector. Control the ball clamp 15 to return to the initial position.

[0084] Step four: Repeat step three until a sufficient number of arc-grooved connector rods 48 are connected. If the lifting height of the ball clamp 15 is insufficient during the connection process, add an extension rod 13 to the connection / disconnection device to increase the lifting height of the ball clamp 15.

[0085] Step 5: Install the top plate 49 with arc-shaped groove into the ball clamp 15, control the loading and unloading device to insert the top plate 49 with arc-shaped groove into the upper end of the column with arc-shaped groove insertion rod 48, and control the ball clamp to return to the initial position.

[0086] Step six: Control the extension of the stabilizing cylinder rod 3 to tighten the column.

[0087] Step 7: Repeat steps 1 to 6 to stabilize the four columns of the drilling rig.

[0088] According to the above technical solution, the process of disassembling the arc-grooved connector rod 48 and the arc-grooved top plate 49 is as follows:

[0089] Step 1: Place the loading and unloading device next to the drilling rig column, with the center of the drilling rig column positioned on the arc trajectory of the ball chuck 15.

[0090] Step two: Control the retraction of the cylinder rod of the stabilizing cylinder 3, causing the top plate 49 with the arc-shaped groove to detach from the top plate, and the column assembly at the upper end of the cylinder rod to descend a certain distance.

[0091] Step 3: Control the loading and unloading device to remove the top plate 49 with the arc-shaped groove and place it on the ground.

[0092] Step 4: Control the loading and unloading device to remove all the arc-grooved plug rods 48 and place them on the ground. Step 5: Repeat steps 1 to 4 to complete the disassembly of the four column assemblies of the drilling rig.

Claims

1. A loading and unloading device for a stabilizing column assembly of a tunnel drilling rig, characterized in that, Includes a base (12), multiple extension rods (13), a roller beam frame (14), and a ball clamp (15); The base (12) includes a support leg (16), a base plate (17) is mounted on the support leg (16), an upper plate (19) is mounted on the base plate (17) via a rotary driver (18), and a gear assembly (20), a guide tube (21) and a winch (22) are fixedly mounted on the upper plate (19). The base plate (17), the rotary driver (18) and the upper plate (19) are coaxially provided with a central through hole, which is connected to the guide tube (21). The extension rod (13) is inserted into the hollow guide tube (21) from the lower end of the base plate (17) through the central through hole. The extension rod (13) includes a round tube (23) with open ends. The round tube (23) is divided into an integrally formed upper large-diameter tube section and a lower small-diameter tube section. Two adjacent extension rods (13) are connected by inserting the large-diameter tube section and the small-diameter tube section. A rack (24) is fixedly provided on the outer wall of the large-diameter tube section along the axial direction. A limit groove is opened on the side of the guide tube (21). The rack (24) is fitted into the limit groove so that the extension rod (13) can only move axially up and down in the guide tube (21). During the rotation of the upper plate (19) driven by the rotary driver (18), the limiting through groove transmits force to the side of the rack (24) of the extension rod (13), causing the extension rod (13) to rotate; the gear in the gear assembly (20) meshes with the rack (24), and the vertical lifting of the extension rod (13) is realized under the drive of the gear assembly (20); The roller beam frame (14) includes a beam frame (29), and a plug pipe (26) is provided at the lower left end of the beam frame (29). The plug pipe (26) is inserted into the large-diameter pipe section at the upper part of the extension rod (13). Rollers (28) are provided at the left and right ends of the beam frame (29). The wire rope of the winch (22) passes around the rollers (28) and suspends the ball clamp (15). The ball clamp (15) includes a sleeve (30), the upper part of which is fitted inside the outer shell (33), and a limit cap (32) is installed outside the outer shell (33) by a threaded connection. The limit cap (32) is fitted outside the sleeve (30), and the lower part of the sleeve (30) extends out of the limit cap (32). The lower part of the inner wall of the limit cap (32) is provided with an inner conical surface (40), and the inner wall of the limit cap (32) is a cylindrical surface (46). Multiple steel balls (31) are arranged in the annular space formed between the limit cap (32), the sleeve (30) and the outer shell (33). The radial inner side of the steel balls (31) can protrude into the inner wall of the sleeve (30) through an arc-shaped recess (47) opened on the lower side wall of the sleeve (30). The top of the sleeve (30) is connected to one end of the pull rod (35). The other end of the pull rod (35) passes through the through hole at the upper end of the sleeve (30) and the through hole at the upper end of the outer shell (33) and is connected to the cylinder rod of the oil cylinder (37) through the connecting sleeve (36). The oil cylinder (37) is fixedly installed on the top of the outer shell (33). The retraction of the cylinder rod of the oil cylinder (37) can drive the sleeve (30) to move upward. A return spring (34) is installed in the cavity between the outer top surface of the sleeve (30) and the inner top surface of the outer shell (33). The return spring (34) is sleeved around the pull rod (35). When the cylinder rod of the hydraulic cylinder (37) is fully retracted, the steel ball (31) can move freely between the arc-shaped recess (47) and the cylindrical surface (46), and the ball clamp (15) is in the open state. When the hydraulic cylinder (37) is not in motion, the return force of the return spring (34) pushes the sleeve (30) to the lowest end. Under the action of the inner conical surface (40), the steel ball (31) moves toward the radial center of the sleeve (30) and is clamped in the arc-shaped recess (47) opened on the sleeve (30), and the ball clamp (15) is in the clamped state.

2. A plug-in rod for loading and unloading using the loading and unloading device for the stabilizing column assembly of a tunnel drilling rig as described in claim 1, comprising an integrally formed small-diameter tube body (7) and a large-diameter tube body (9), characterized in that, The outer wall of the upper end of the large-diameter pipe (9) is provided with an arc groove (41) to form an arc groove plug rod (48); the radius of the arc groove (41) is the same as the radius of the steel ball (31) in the ball clamp (15), and the steel ball (31) can be clamped in the arc groove (41) of the arc groove plug rod (48) to realize the clamping of the ball clamp (15) on the arc groove plug rod (48).

3. A top-mounted plate for loading and unloading using the loading and unloading device for the stabilizing column assembly of a tunnel drilling rig as described in claim 1, characterized in that, The device includes an annular plate (42), the lower end of which is connected to a corresponding stiffening plate (44) via multiple support columns (43). The multiple stiffening plates (44) are evenly distributed and fixedly connected to the lower outer wall of the tube body (45). The tube body (45) and the annular plate (42) are coaxially arranged. The upper end of the tube body (45) is flush with the upper end of the annular plate (42). An arc groove (41) is provided on the upper outer wall of the tube body (45) to form a top plate (49) with an arc groove. The radius of the arc groove (41) is the same as the radius of the steel ball (31) in the ball clamp (15). The steel ball (31) can be clamped in the arc groove (41) of the top plate (49) with an arc groove to achieve the clamping of the top plate (49) with an arc groove by the ball clamp (15).

Images