A platform-lifting horizontal high-opening coal mine underground drilling machine

Abstract

The present application relates to the technical fields of coal mine drilling machine, and discloses a platform lifting type horizontal high-opening coal mine underground drilling machine, which comprises a drilling machine body and further comprises: a lifting unit, the lifting unit comprises an upper lifting mechanism and a lower lifting mechanism, a lifting platform is arranged between the upper lifting mechanism and the lower lifting mechanism, the lower lifting mechanism drives the lifting platform to lift so as to control the upper lifting mechanism to lift, and a drilling tool is installed on the upper lifting mechanism; a stabilizing unit, the stabilizing unit comprises a telescopic rod movably arranged on both sides of the drilling machine body, a counterweight is installed at the end of the telescopic rod, the telescopic rod is extended to unfold the counterweight, and the stabilizing unit further comprises a stretching mechanism. The present application adjusts the height of the drilling tool by arranging the upper lifting mechanism and the lower lifting mechanism, avoids the mode that the height of the traditional drilling machine is insufficient and depends on the installation of a stand column for adjustment, reduces the risk, and is easier to operate.

Description

Technical Field

[0001] This invention belongs to the field of coal mine drilling rig technology, specifically, it relates to a platform lifting type horizontal high-opening underground drilling rig for coal mines. Background Technology

[0002] Existing high-aperture drilling rigs commonly employ a heightened and lengthened column design to increase drilling height when performing horizontal directional drilling operations exceeding two meters. However, this structure suffers from three inherent drawbacks: First, the increased column height leads to a shift in the overall center of gravity and a significant decrease in anti-overturning moment. During drilling, the coupling effect of axial thrust and torque easily causes machine body swaying and guide rail misalignment, directly affecting the straightness and diameter accuracy of the hole. Second, the excessively long column lacks rigidity, generating low-frequency resonance under high-frequency vibration and periodic loads, exacerbating fatigue damage to key components (such as slewing bearings and propulsion cylinders), and increasing the failure rate. Third, drill rod loading and unloading rely entirely on manual ladder climbing, with operating heights often reaching approximately three meters. The lack of fall protection poses significant safety risks such as falls from height and impacts from heavy objects, and is also inefficient. Furthermore, the heightened and lengthened column structure significantly increases the overall transport size of the machine, limiting its deployment capability in confined spaces. Therefore, a new high-aperture drilling rig architecture that can stably support and safely load and unload drill rods is urgently needed.

[0003] In view of this, the present invention is hereby proposed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a platform-lifting horizontal high-opening underground drilling rig for coal mines. By setting up upper and lower lifting mechanisms to adjust the height of the drill bit, it avoids the traditional method of relying on adding columns for adjustment when the drilling rig is not high enough, reducing risks and making it easier to operate. By setting up a first electric cylinder and a second electric cylinder to drive the extension of the insertion rod in stages, and driving the counterweight to extend, the overall stability of the drilling rig is increased. At the same time, when operating in narrow mine tunnels, the insertion rod abuts against the mine tunnel to form a supporting effect, further improving stability.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A platform-lifting horizontal high-opening underground drilling rig for coal mines includes a drilling rig body and further includes: a lifting unit, which includes an upper lifting mechanism and a lower lifting mechanism, with a lifting platform disposed between the upper and lower lifting mechanisms. The lower lifting mechanism controls the lifting of the upper lifting mechanism by driving the lifting platform to lift. Drilling tools are mounted on the upper lifting mechanism. A stabilizing unit includes insert rods movably disposed on both sides of the drilling rig body. Counterweights are mounted at the ends of the insert rods. The insert rods extend to deploy the counterweights. The stabilizing unit also includes a stretching mechanism, which includes a first pushing member and a second pushing member. The first pushing member and the second pushing member push the insert rods in stages to extend them.

[0007] In a preferred embodiment of the present invention, the lifting mechanism includes an upper column installed on the top of the lifting platform, the drill bit being movably installed on the upper column, and an upper hydraulic cylinder being installed on the top of the lifting platform, the upper hydraulic cylinder extending to drive the drill bit to move along the upper column.

[0008] In a preferred embodiment of the present invention, the lower lifting mechanism includes a lower column installed on the top of the drilling rig body, and a lower hydraulic cylinder rotatably installed on the drilling rig body at one end. A sleeve is movably sleeved on the lower column, and the lifting platform is fixedly installed on one side of the sleeve. A first support member is rotatably installed at the output end of the lower hydraulic cylinder. The end of the first support member is rotatably installed on the drilling rig body. A second support member is rotatably installed on the top of the first support member, and the top of the second support member is rotatably installed at the bottom of the lifting platform.

[0009] In a preferred embodiment of the present invention, the stabilizing unit further includes a support mechanism for supporting the insertion rod. The support mechanism includes mounting components fixedly installed on both sides of the drilling rig body. The insertion rod movably passes through the mounting components, and a support plate is fixedly installed between the mounting components on both sides, with the support plate fitting against the insertion rod.

[0010] In a preferred embodiment of the present invention, the stabilizing unit further includes a first driving mechanism and a second driving mechanism, the first driving mechanism and the second driving mechanism being used to drive the first pusher and the second pusher, respectively. The first driving mechanism includes a first electric cylinder mounted on the drilling rig body, and the second driving mechanism includes a second electric cylinder.

[0011] In a preferred embodiment of the present invention, a pulling member is installed at the output end of the first electric cylinder, and a sliding groove is provided on the pulling member. A protruding post is fixedly installed at one end of the first pushing member, and the protruding post is movably connected in the sliding groove. A groove is provided on the insert rod, and the other end of the first pushing member is rotatably installed in the groove. The first pushing member is in an inclined state with the insert rod.

[0012] In a preferred embodiment of the present invention, one end of the second pusher is rotatably connected to the end of the insertion rod, and a connector is rotatably installed at the bottom of the other end of the second pusher. A slide rod is movably inserted into the connector, and a fixing member is fixedly installed at the end of the slide rod. The second electric cylinder is fixedly installed on the fixing member, and a push assembly is provided between the second electric cylinder and the connector.

[0013] In a preferred embodiment of the present invention, the second pusher is symmetrically distributed, and the second electric cylinder is located at the bottom of the second pusher which is diagonally distributed. The pusher assembly includes a movable groove formed at the bottom of the connector, and a push plate is movably connected inside the movable groove. The push plate is fixedly installed at the output end of the second electric cylinder at the corresponding position.

[0014] In a preferred embodiment of the present invention, the second pushing member includes plates distributed vertically, one end of which is rotatably connected to the upper and lower sides of one end of the insertion rod, and a matching block is fixedly installed on the other end of the plate. The first pushing member is located between the vertically distributed plates.

[0015] In a preferred embodiment of the present invention, a centering mechanism is provided on one side of the insertion rod. The centering mechanism includes a tension spring, and a first connecting plate and a second connecting plate are fixedly installed at both ends of the tension spring. The first connecting plate is fixedly connected to a counterweight, and the second connecting plate is fixedly installed on the drilling rig body. A fixing mechanism is also provided on one side of the insertion rod. The fixing mechanism includes a locking device fixedly installed on the top of the drilling rig body, and one side of the locking device is adapted to the insertion rod.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention adjusts the height of the drill bit by setting up an upper lifting mechanism and a lower lifting mechanism, avoiding the traditional method of relying on adding a column to adjust the height of the drill bit when it is not high enough, reducing risks and making it easier to operate;

[0018] This invention increases the overall stability of the drilling rig by setting the first and second electric cylinders to drive the extension of the insertion rod in stages, thereby causing the counterweight to extend as well. At the same time, when operating in narrow mine tunnels, the insertion rod abuts against the tunnel to provide support, further improving stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the platform-type horizontal high-aperture underground drilling rig for coal mines of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure at the flipping platform of the present invention;

[0021] Figure 3This is a schematic diagram of the side structure of the platform-type horizontal high-aperture underground drilling rig for coal mines of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure at the first support member of the present invention;

[0023] Figure 5 This is a schematic diagram of the overall structure of the stabilizing unit of the present invention;

[0024] Figure 6 This is a schematic diagram of the insertion rod structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the first driving mechanism and the second driving mechanism of the present invention;

[0026] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point A in the middle;

[0027] Figure 9 This is a schematic diagram of the structure of the first pushing member of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the second pushing component of the present invention.

[0029] Figure label:

[0030] 100. Drilling rig body; 101. Lower column; 102. Casing; 103. Lifting platform; 104. Upper column; 105. Drilling tools; 106. Upper hydraulic cylinder; 107. Lower hydraulic cylinder; 108. First support component; 109. Second support component; 110. Tilting platform;

[0031] 200. Mounting component; 201. Support plate; 202. Insert rod; 203. Counterweight; 204. Locking device; 205. First connecting plate; 206. Tension spring; 207. Second connecting plate; 208. First pushing component; 209. Groove; 210. Protrusion; 211. Pulling component; 212. Slide groove; 213. First electric cylinder; 214. Second pushing component; 215. Connecting component; 216. Slide rod; 217. Fixing component; 218. Second electric cylinder; 219. Push plate; 220. Movable groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0033] Example 1

[0034] like Figures 1 to 10As shown, a platform-lifting type horizontal high-opening underground drilling rig for coal mines includes a drilling rig body 100, and further includes: a lifting unit, which includes an upper lifting mechanism and a lower lifting mechanism, with a lifting platform 103 disposed between the upper and lower lifting mechanisms. The lower lifting mechanism controls the lifting of the upper lifting mechanism by driving the lifting platform 103 to lift. A drill bit 105 is installed on the upper lifting mechanism; a stabilizing unit, which includes insert rods 202 movably disposed on both sides of the drilling rig body 100, with a counterweight 203 installed at the end of the insert rods 202. The insert rods 202 extend to deploy the counterweight 203. The stabilizing unit also includes an extension mechanism, which includes a first pusher 208 and a second pusher 214. The first pusher 208 and the second pusher 214 push the insert rods 202 in stages and extend them.

[0035] like Figures 1 to 3 As shown, in a specific embodiment, the lifting mechanism includes an upper column 104 mounted on the top of the lifting platform 103. The drill bit 105 is movably mounted on the upper column 104. An upper hydraulic cylinder 106 is also mounted on the top of the lifting platform 103. The upper hydraulic cylinder 106 extends to drive the drill bit 105 to move along the upper column 104. In this configuration, the upper hydraulic cylinder 106, the base of the drill bit 105, and the upper column 104 form a triangular structure. When the upper hydraulic cylinder 106 maintains a certain extension length, the drill bit 105 remains stable under the action of the triangular structure. A tilting platform 110 is also mounted on one side of the drilling rig body 100. The tilting platform 110 allows workers to stand and operate when loading and unloading drill rods, and can also rotate 90 degrees to provide protection for the operator's seat.

[0036] like Figures 3 to 4 As shown, the lower lifting mechanism further includes a lower column 101 mounted on the top of the drilling rig body 100, and a lower hydraulic cylinder 107 rotatably mounted on the drilling rig body 100 at one end. A sleeve 102 is movably sleeved on the lower column 101. The lifting platform 103 is fixedly mounted on one side of the sleeve 102. A first support member 108 is rotatably mounted on the output end of the lower hydraulic cylinder 107. The end of the first support member 108 is rotatably mounted on the drilling rig body 100. A second support member 109 is rotatably mounted on the top of the first support member 108. The top of the second support member 109 is rotatably mounted on the bottom of the lifting platform 103. In this configuration, when the lower hydraulic cylinder 107 extends, it pushes the first support member 108 and the second support member 109 to rotate to a vertical position. At this time, the weight of the lifting platform 103 and the drill bit 105 acts as much as possible on the first support member 108 and the second support member 109 to prevent the lower hydraulic cylinder 107 from failing due to long-term excessive load.

[0037] The implementation principle of a platform lifting type horizontal high-opening coal mine underground drilling rig in this embodiment is as follows: When performing horizontal directional drilling operations above two meters, it is necessary to raise the drill bit 105 to a specified height. At this time, the upper hydraulic cylinder 106 is activated to control the position of the drill bit 105 to rise. During the rise of the drill bit 105, it slides along the upper column 104. When the upper lifting mechanism alone cannot make the drill bit 105 reach the specified height, the lower hydraulic cylinder 107 can be activated. The lower hydraulic cylinder 107 works to push the first support member 108 and the second support member 109, thereby raising the lifting platform 103, and then raising the upper lifting mechanism and the drill bit 105 together. At the same time, the first support member 108 and the second support member 109 are in a collinear state, so that the weight of the drill bit 105 and the lifting platform 103 is applied to the first support member 108 and the second support member 109 as much as possible, thereby reducing the load on the lower hydraulic cylinder 107. At this time, the height of the drill bit 105 can still be adjusted within a certain range by adjusting the upper hydraulic cylinder 106.

[0038] Example 2

[0039] like Figures 5 to 7 As shown, the stabilizing unit further includes a support mechanism for supporting the insertion rod 202. The support mechanism includes mounting members 200 fixedly installed on both sides of the drilling rig body 100. The insertion rod 202 movably passes through the mounting members 200. A support plate 201 is fixedly installed between the two mounting members 200, and the support plate 201 fits against the insertion rod 202. In this configuration, the cross-section of the support plate 201 is arc-shaped. When the first pushing member 208 and the second pushing member 214 push the insertion rod 202, one side of the insertion rod 202 abuts against the support plate 201 to prevent uneven force on the insertion rod 202.

[0040] like Figures 5 to 7 As shown, the stabilizing unit further includes a first driving mechanism and a second driving mechanism, which are used to drive the first pusher 208 and the second pusher 214, respectively. The first driving mechanism includes a first electric cylinder 213 mounted on the drilling rig body 100, and the second driving mechanism includes a second electric cylinder 218. In this configuration, the first electric cylinder 213 is initially in an extended state, and the second electric cylinder 218 is initially in a retracted state.

[0041] like Figure 7 , Figure 9As shown, further, a pulling member 211 is installed at the output end of the first electric cylinder 213. A sliding groove 212 is provided on the pulling member 211. A protrusion 210 is fixedly installed at one end of the first pushing member 208, and the protrusion 210 is movably connected within the sliding groove 212. A groove 209 is provided on the insertion rod 202, and the other end of the first pushing member 208 is rotatably installed inside the groove 209. The first pushing member 208 is in an inclined state relative to the insertion rod 202. In this configuration, when the first pushing member 208 is in an inclined state, its component force in the axial direction of the insertion rod 202 pushes the insertion rod 202 to move axially. When the first electric cylinder 213 is in its maximum extended position, the first pushing member 208 is in an inclined state to prevent the inclination direction of the first pushing member 208 from changing.

[0042] like Figure 7 , Figure 8 , Figure 10 As shown, further, one end of the second pusher 214 is rotatably connected to the end of the insert rod 202, and the other end of the second pusher 214 is rotatably mounted with a connector 215. A slide rod 216 is movably inserted into the connector 215, and a fixing member 217 is fixedly mounted at the end of the slide rod 216. The second electric cylinder 218 is fixedly mounted on the fixing member 217, and a push assembly is provided between the second electric cylinder 218 and the connector 215. In this configuration, there are four sets of second pushers 214 arranged symmetrically, and two second electric cylinders 218, which are used to drive the two sets of second pushers 214 arranged side by side.

[0043] like Figure 7 , Figure 8 , Figure 10 As shown, the second pushing members 214 are symmetrically distributed, and the second electric cylinders 218 are positioned at the bottom of the diagonally distributed second pushing members 214. The pushing assembly includes a movable groove 220 formed at the bottom of the connecting member 215. A push plate 219 is movably connected inside the movable groove 220, and the push plate 219 is fixedly installed at the output end of the corresponding second electric cylinder 218. In this configuration, the movable groove 220 is used to leave a margin so that when the first electric cylinder 213 is working, the second pushing member 214 moves a certain distance along with it, and will not push the push plate 219 during the movement.

[0044] like Figure 6 , Figure 9 , Figure 10 As shown, the second pushing member 214 further includes vertically distributed plates, one end of which is rotatably connected to the upper and lower sides of one end of the insertion rod 202. A matching block is fixedly installed at the other end of the plates. The first pushing member 208 is located between the vertically distributed plates. In this configuration, the second pushing member 214 and the first pushing member 208 are symmetrically positioned with respect to the insertion rod 202, ensuring that the insertion rod 202 is subjected to uniform force and will not tilt.

[0045] like Figures 5 to 6 As shown, furthermore, a centering mechanism is provided on one side of the insertion rod 202. The centering mechanism includes a tension spring 206, with a first connecting plate 205 and a second connecting plate 207 fixedly installed at both ends of the tension spring 206. The first connecting plate 205 is fixedly connected to the counterweight 203, and the second connecting plate 207 is fixedly installed on the drilling rig body 100. A fixing mechanism is also provided on one side of the insertion rod 202. The fixing mechanism includes a locking device 204 fixedly installed on the top of the drilling rig body 100, with one side of the locking device 204 adapted to the insertion rod 202. In this configuration, the insertion rod 202 is lubricated with the mounting component 200 and the support plate 201 to reduce the resistance to the movement of the insertion rod 202, so that the tension spring 206 can drive the insertion rod 202 to return to its original position when the two sides of the insertion rod 202 are offset.

[0046] The implementation principle of a platform lifting type horizontal high-opening underground drilling rig for coal mines in this embodiment is as follows: During operation, the first electric cylinder 213 is first activated. The first electric cylinder 213 retracts and drives the pulling member 211 to move. The pulling member 211 pushes one end of the first pushing member 208 to move through the sliding groove 212 and the protrusion 210. The other end of the first pushing member 208 pushes the insert rod 202 to extend a certain distance. During this process, the insert rod 202 pulls one end of the second pushing member 214 to move a certain distance to the side, so that the other end of the second pushing member 214 moves a certain distance along the axial direction of the sliding rod 216. At this time, the push plate 219 is still in the movable groove. Inside 220, when the first electric cylinder 213 has finished moving, the first electric cylinder 213 is turned off and the second electric cylinder 218 is started. The second electric cylinder 218 drives the push plate 219 to move. When the push plate 219 abuts against the inner wall of the movable groove 220, the second electric cylinder 218 drives the connecting member 215 to move. Since one end of the second pushing member 214 has moved to the side a certain distance, it is in an inclined state. At this time, the connecting member 215 drives the insertion rod 202 to continue moving by pushing the second pushing member 214. During the movement, the insertion rod 202 drives the first pushing member 208 to make the protrusion 210 slide in the slide groove 212.

[0047] When retracting, the second electric cylinder 218 is activated first. During the retraction of the second electric cylinder 218, the push plate 219 moves along the movable groove 220. When the push plate 219 abuts against the inner wall of the movable groove 220, the second pusher 214 is pulled by the connector 215 to reset the insertion rod 202 to a certain extent. During the reset process, the first pusher 208 drives the protrusion 210 to slide in the slide groove 212. When the second electric cylinder 218 is fully reset, the ends of the first pushers 208 on both sides come together. At this time, the first electric cylinder 213 is reset. The first electric cylinder 213 extends and drives the puller 211, thereby pulling the first pusher 208 and resetting the insertion rod 202.

[0048] During the extension of the insertion rod 202, the counterweight 203 extends, and under the action of the tension spring 206, the counterweights 203 on both sides extend by the same distance. When the working environment of the drilling rig is relatively spacious, the insertion rod 202 extends completely. At this time, the counterweight 203 moves away from the drilling rig body 100, making the drilling rig body 100 more stable. When the working environment of the drilling rig is relatively narrow, the insertion rod 202 abuts against the side wall of the mine tunnel during the extension process, thereby achieving a stabilizing support effect.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A platform-lifting type horizontal high-opening underground drilling rig for coal mines, comprising a drilling rig body drying function, characterized in that... Also includes: The lifting unit includes an upper lifting mechanism and a lower lifting mechanism, with a lifting platform drying between the upper and lower lifting mechanisms. The lower lifting mechanism controls the lifting of the upper lifting mechanism by driving the lifting platform drying. A drill bit drying device is installed on the upper lifting mechanism. The stabilizing unit includes insert rod drying devices movably disposed on both sides of the drill rig body drying device. A counterweight drying device is installed at the end of each insert rod drying device. The insert rod drying device extends to unfold the counterweight drying device. The stabilizing unit also includes a stretching mechanism, which includes a first pushing member drying device and a second pushing member drying device. The first and second pushing member drying devices push the insert rod drying device step-by-step to extend it. The lifting mechanism includes an upper column dryer installed on the top of the lifting platform dryer, the drill bit dryer is movably installed on the upper column dryer, and an upper hydraulic cylinder dryer is also installed on the top of the lifting platform dryer. The upper hydraulic cylinder dryer extends to drive the drill bit dryer to move along the upper column dryer. The lower lifting mechanism includes a lower column drying unit installed on the top of the drilling rig body drying unit, and a lower hydraulic cylinder drying unit with one end rotatably installed on the drilling rig body drying unit. A sleeve drying unit is movably sleeved on the lower column drying unit. The lifting platform drying unit is fixedly installed on one side of the sleeve drying unit. A first support member drying unit is rotatably installed at the output end of the lower hydraulic cylinder drying unit. The end of the first support member drying unit is rotatably installed on the drilling rig body drying unit. A second support member drying unit is rotatably installed at the top of the first support member drying unit. The top of the second support member drying unit is rotatably installed at the bottom of the lifting platform drying unit. The stabilizing unit also includes a support mechanism for supporting the drying of the insertion rod. The support mechanism includes mounting parts fixedly installed on both sides of the drilling rig body drying, the insertion rod drying movably passing through the mounting parts drying, and a support plate drying fixedly installed between the two mounting parts drying, the support plate drying fitting the insertion rod drying. The stabilizing unit further includes a first driving mechanism and a second driving mechanism. The first driving mechanism and the second driving mechanism are respectively used to drive the first pusher to dry and the second pusher to dry. The first driving mechanism includes a first electric cylinder drying mounted on the drilling rig body drying, and the second driving mechanism includes a second electric cylinder drying. The output end of the first electric cylinder dryer is equipped with a pulling dryer, and the pulling dryer has a sliding groove dryer. One end of the first pushing dryer is fixedly equipped with a protruding post dryer, and the protruding post dryer is movably connected in the sliding groove dryer. The insert rod dryer has a groove dryer, and the other end of the first pushing dryer is rotatably installed in the groove dryer. The first pushing dryer is in an inclined state with the insert rod dryer. One end of the second pusher drying is rotatably connected to the end of the insert drying rod, and the bottom of the other end of the second pusher drying is rotatably installed with a connecting drying rod. A sliding rod drying rod is movably inserted into the connecting drying rod, and a fixing drying rod is fixedly installed at the end of the sliding rod drying rod. The second electric cylinder drying rod is fixedly installed on the fixing drying rod, and a push assembly is provided between the second electric cylinder drying rod and the connecting drying rod.

2. The platform-lifting horizontal high-opening underground drilling rig for coal mines according to claim 1, characterized in that, The second pusher drying is symmetrically distributed, and the second electric cylinder drying position is set at the bottom of the second pusher drying which is diagonally distributed. The pusher assembly includes a movable groove drying opened at the bottom of the connector drying. A push plate drying is movably connected inside the movable groove drying. The push plate drying is fixedly installed at the output end of the second electric cylinder drying at the corresponding position.

3. The platform-lifting horizontal high-opening underground drilling rig for coal mines according to claim 2, characterized in that, The second pusher drying includes vertically distributed plates, one end of which is rotatably connected to the upper and lower sides of the insert drying end, and the other end of which is fixedly installed with a matching block. The first pusher drying is located between the vertically distributed plates.

4. The platform-lifting horizontal high-opening underground drilling rig for coal mines according to claim 3, characterized in that, A centering mechanism is provided on one side of the insertion rod drying. The centering mechanism includes a tension spring drying. A first connecting plate drying and a second connecting plate drying are fixedly installed at both ends of the tension spring drying. The first connecting plate drying is fixedly connected to the counterweight drying. The second connecting plate drying is fixedly installed on the drilling rig body drying. A fixing mechanism is also provided on one side of the insertion rod drying. The fixing mechanism includes a locking device drying fixedly installed on the top of the drilling rig body drying. The locking device drying side is adapted to the insertion rod drying.

Images