Adjustable drilling support for arched tunnel

Abstract

The invention relates to the technical field of drilling equipment, in particular to an adjustable drilling support for an arched tunnel, which comprises a bottom plate, a support part, a jacking part and a regulation and control part, when the arched tunnel is drilled, the drilling position is firstly determined, and the specific position of the bottom plate arranged in the tunnel is adjusted according to the drilling position; the first rod or the second rod in the supporting piece is inserted into the fixing base, the drilling arm is arranged on the second rod, if the horizontal height of the drilling position is larger than the length of the second rod, the adjusting and controlling piece can adjust the first rod to be in the state of being inserted into the fixing base, and at the moment, the upper end of the second rod is connected with the fixing plate through the second connector; the jacking rod on the fixing rod can abut against the top wall of a tunnel, so that it is ensured that the first rod and the second rod are kept in a stable state, the drilling arm is arranged on the second rod, the horizontal height of the drilling arm on the second rod can be adjusted, and therefore drilling can be conveniently conducted at any height position, and then the drilling precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and particularly relates to an adjustable drilling support for an arched tunnel. Background Art

[0002] During the construction process of tunnel engineering, drilling operations are common and crucial. As an important tool for fixing and assisting drilling equipment, when the existing drilling supports on the market are applied to arched tunnels, in terms of the adjustment range of the drilling position, the adjustment ability of their drilling arms is limited, and they can often only be flexibly adjusted in the middle and lower areas to achieve drilling operations. However, in actual construction, there are also a large number of drilling requirements in the upper area. The existing drilling supports on the market cannot effectively adjust the positions that need to be drilled in the upper part, thus affecting the drilling accuracy.

[0003] In addition, due to the particularity of the arched structure, the existing drilling supports can usually only be supported at the middle part of the arch. In order to enable the drilling equipment to slide to the target drilling area, it is necessary to use an extremely long drilling arm. However, the extremely long drilling arm is prone to problems such as shaking and deformation due to uneven stress during use, affecting the drilling accuracy and stability. Summary of the Invention

[0004] The present invention provides an adjustable drilling support for an arched tunnel to solve the problem that the existing drilling supports affect the drilling accuracy.

[0005] The adjustable drilling support for an arched tunnel of the present invention adopts the following technical solutions: An adjustable drilling support for an arched tunnel, which includes a bottom plate, a support member, a tightening member, and a regulating member.

[0006] A fixing seat with an upward opening is provided on the bottom plate; the support member includes a first rod and a second rod, both the first rod and the second rod are vertically arranged, the first rod and the second rod are slidably connected, and both the first rod and the second rod can be inserted into the fixing seat; a drilling arm is provided on the second rod, and the horizontal height of the drilling arm on the second rod is adjustable; the tightening rod is vertically arranged and can be telescopically arranged, and the upper end of the tightening rod can abut against the top wall of the tunnel; a fixing plate is provided at the lower end of the tightening rod, and a first joint and a second joint are provided on the fixing plate, the first joint can be connected to the upper end of the first rod, and the second joint can be connected to the upper end of the second rod; the regulating member can adjust the insertion of the first rod into the fixing seat, and at the same time adjust the connection of the upper end of the second rod to the tightening rod through the second joint; the regulating member can also adjust the insertion of the second rod into the fixing seat, and at the same time adjust the connection of the upper end of the first rod to the tightening rod through the first joint.

[0007] Further, a hinge rod is provided on the fixed plate. One end of the hinge rod is hinged to the upper end face of the fixed plate. The hinge rod has a first length and a second length, and the first length is greater than the second length. A fixed block is provided on the top wall of the tunnel. The end of the hinge rod away from the fixed plate can abut against the fixed block. When the hinge rod abuts against the fixed block with the first length, there is a first included angle between the hinge rod and the jacking rod. When the hinge rod abuts against the fixed block with the second length, there is a second included angle between the hinge rod and the jacking rod, and the first included angle is smaller than the second included angle. When the second rod is inserted into the fixed seat and the drilling arm is at the lower half of the second rod, the hinge rod is in the second length.

[0008] Further, the hinge rod includes a first section and a second section. The first section is hinged to the fixed plate. The first section is hollow inside, and one end of the second section is slidably inserted into the first section. One first adjustment hole is provided on the first section, and two second adjustment holes are provided on the second section. The two second adjustment holes are spaced along the length direction of the second section. An adjustment rod is provided in the first adjustment hole, and the adjustment rod can enter any one of the second adjustment holes.

[0009] Further, the control member includes a fixed rack and a sliding block. A vertical guide rail is provided on the second rod. The sliding block is slidably arranged along the guide rail. A first locking member is provided on the sliding block, and the first locking member is used to fix the sliding block on the guide rail. The fixed rack is fixedly arranged on the first rod, and an adjustment gear is rotatably arranged on the sliding block. The adjustment gear is always meshed with the fixed rack.

[0010] Further, the first locking member includes a plurality of first screws. The first screws are threadedly connected to the sliding block, and the first screws can abut against the second rod.

[0011] Further, a connection block is hinged to the end of the drilling arm. The connection block can be slidably arranged along the second rod. A second locking member is provided on the connection block, and the second locking member is used to fix the connection block at any position on the second rod.

[0012] Further, a vertical adjustment rack is fixedly arranged on the second rod. A rotating gear is rotatably arranged on the connection block, and the rotating gear is always meshed with the adjustment rack.

[0013] Further, the second locking member includes a plurality of second screws. The second screws are threadedly connected to the connection block, and the second screws can abut against the second rod.

[0014] Further, an auxiliary block is slidably arranged on the drilling arm. An auxiliary rod is hinged to the auxiliary block, and the other end of the auxiliary rod is hinged to the connecting block. The auxiliary rod is used for auxiliary support of the drilling arm.

[0015] Further, the tightening rod includes a fixed section and a sliding section. The fixed section is fixedly connected to the fixed plate. The fixed section is hollow inside, and one end of the sliding section is slidably inserted into the fixed section. A compression spring is arranged inside the fixed section. One end of the compression spring is fixedly connected to the sliding section, and the other end of the compression spring is fixedly connected to the fixed section.

[0016] The beneficial effects of the present invention are as follows: An adjustable drilling support for an arched tunnel of the present invention includes a bottom plate, a support member, a tightening member, and a regulating member. When drilling an arched tunnel, first, determine the drilling position. According to the drilling position, adjust the specific orientation of the bottom plate arranged inside the tunnel. Insert the first rod or the second rod in the support member into the fixed seat. The drilling arm is arranged on the second rod, and the height of the drilling arm on the second rod can be adjusted by the staff. If the horizontal height of the drilling position is greater than the length of the second rod, the regulating member can adjust the first rod to be in a state of being inserted into the fixed seat. At this time, the upper end of the second rod is connected to the fixed plate through the second connector, and the tightening rod on the fixed rod can abut against the top wall of the tunnel, so as to ensure that the first rod and the second rod maintain a stable state. The drilling arm is arranged on the second rod, and the horizontal height of the drilling arm on the second rod is adjustable, so as to facilitate drilling at any height position, thereby improving the accuracy of drilling. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention; Figure 2 It is a cross-sectional view of an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention; Figure 3 It is a state diagram of the upper end of the first rod connected to the first connector in an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention; Figure 4 It is a state diagram of the upper end of the second rod connected to the second connector in an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention; Figure 5 State diagram of an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention when the articulated rod is at the first length; Figure 6 State diagram of an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention when the articulated rod is at the second length; Figure 7 is Figure 2 Partial enlarged view at A in Figure 8 Schematic structural diagram of the articulated rod and the jacking rod in an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention; Figure 9 Cross-sectional view of the articulated rod and the jacking rod in an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention.

[0019] In the figure: 110, bottom plate; 120, fixed seat; 130, first rod; 140, second rod; 150, drilling arm; 160, drilling equipment; 170, jacking rod; 171, fixed section; 172, sliding section; 173, compression spring; 180, articulated rod; 181, first section; 182, second section; 190, fixed block; 210, fixed rack; 220, sliding block; 230, connecting block; 240, adjusting rack; 250, auxiliary block; 260, auxiliary rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0023] As Figures 1 to 9 shown, an adjustable drilling support for an arched tunnel provided by an embodiment of the present invention includes a bottom plate 110, a support member, a tightening member and a regulating member.

[0024] Rotating wheels are provided on the bottom plate 110, and by providing the rotating wheels, it is convenient for the staff to move the bottom plate 110. The bottom plate 110 has a horizontal upper end surface, and a fixed seat 120 is provided on the upper end surface of the bottom plate 110. The fixed seat 120 has a fixed groove with an upward opening.

[0025] The support member includes a first rod 130 and a second rod 140. Both the first rod 130 and the second rod 140 are vertically arranged. The first rod 130 and the second rod 140 are slidably connected, and the lower ends of the first rod 130 and the second rod 140 can both be inserted into the fixed groove of the fixed seat 120. Further, the cross-section of the second rod 140 is C-shaped, and the second rod 140 semi-surrounds the first rod 130. A drilling arm 150 is provided on the outer side wall of the second rod 140. A drilling device 160 can slide on the drilling arm 150, so that the horizontal height of the drilling arm 150 on the second rod 140 can be adjusted. Further, the included angle between the drilling arm 150 and the second rod 140 can be adjusted, so as to facilitate the staff to drill at any angle in the arched tunnel.

[0026] The jacking rod 170 is vertically arranged and can be telescopically set. In the initial state, the jacking rod 170 is in the longest state. The upper end of the jacking rod 170 can abut against the top wall of the tunnel. A fixing plate is arranged at the lower end of the jacking rod 170. A first joint and a second joint are arranged on the fixing plate. Both the first joint and the second joint are arranged on the lower end surface of the fixing plate. The first joint can connect the upper end of the first rod 130, and the second joint can connect the upper end of the second rod 140. When the lower end of the second rod 140 is inserted into the fixing groove of the fixing seat 120, the upper end of the first rod 130 is connected to the fixing plate through the first joint. Correspondingly, when the lower end of the first rod 130 is inserted into the fixing groove of the fixing seat 120, the upper end of the second rod 140 is connected to the fixing plate through the second joint. The regulating member can adjust the insertion of the first rod 130 or the second rod 140 into the fixing groove, and at the same time, the regulating member can also adjust the connection of the first rod 130 or the second rod 140 to the fixing plate. By adjusting the insertion of the first rod 130 or the second rod 140 into the fixing groove through the regulating member, the drilling arm 150 can be adjusted to any height, thereby facilitating the staff to drill at any height position.

[0027] For an adjustable drilling support for an arched tunnel according to the present invention, when drilling an arched tunnel, first, the drilling position is determined. According to the drilling position, the specific orientation of the bottom plate 110 arranged inside the tunnel is adjusted. The first rod 130 or the second rod 140 in the support member is inserted into the fixing seat 120. The drilling arm 150 is arranged on the second rod 140, and the height of the drilling arm 150 on the second rod 140 can be adjusted by the staff. When the horizontal height of the drilling position is greater than the length of the second rod 140, the regulating member can adjust the first rod 130 to be in a state of being inserted into the fixing seat 120. At this time, the upper end of the second rod 140 is connected to the fixing plate through the second connecting head, and the jacking rod 170 on the fixing rod can abut against the top wall of the tunnel, so as to ensure that the first rod 130 and the second rod 140 maintain a stable state. The drilling arm 150 is arranged on the second rod 140, and the horizontal height of the drilling arm 150 on the second rod 140 is adjustable, so as to facilitate drilling at any height position, thereby improving the accuracy of drilling.

[0028] In one embodiment, a hinge rod 180 is provided on the fixed plate, and one end of the hinge rod 180 is hinged to the upper end surface of the fixed plate. The hinge rod 180 has a first length and a second length, and the first length is greater than the second length. When the hinge rod 180 is at the first length, the length of the hinge rod 180 is greater than the initial length of the pressing rod 170. When the hinge rod 180 is at the second length, the length of the hinge rod 180 is less than the initial length of the pressing rod 170. A fixing block 190 is provided on the top wall of the tunnel, and the fixing block 190 can be set according to the drilling position. The fixing block 190 is fixedly connected to the top wall of the tunnel by an expansion bolt. The end of the hinge rod 180 away from the fixed plate can abut against the fixing block 190. In the initial state, the hinge rod 180 and the pressing rod 170 are set to be parallel to each other.

[0029] When drilling the side wall of the arched tunnel is required, the staff first sets a fixing block 190 according to the position where drilling is needed. The fixing block 190 is fixedly arranged on the inner side wall of the arched tunnel, and the fixing block 190 and the drilling position are arranged in the same vertical plane. In the vertical direction, the fixing block 190 is arranged above the drilling position. Subsequently, the staff pushes the bottom plate 110 to move near the drilling position. By comparing the horizontal height of the drilling position with the length of the second rod 140, if the length of the second rod 140 is greater than the horizontal height of the drilling position, the regulating member controls the lower end of the second rod 140 to be inserted into the fixing groove of the fixed seat 120, and adjusts the position of the drilling arm 150 on the second rod 140 so that the drilling device 160 corresponds to the drilling position. At this time, the upper end of the first rod 130 is connected to the fixed plate through the first joint, so that the pressing rod 170 abuts against the top wall of the tunnel. During this process, the hinge rod 180 is in the state of the first length, and the time when the hinge rod 180 contacts the top wall of the tunnel is earlier than the time when the pressing rod 170 abuts against the top wall of the tunnel. Under the guidance of the top wall of the arched tunnel, the hinge rod 180 rotates relative to the fixed plate. During this process, the pressing rod 170 continuously shortens. When the hinge rod 180 abuts against the fixing block 190, the pressing rod 170 no longer shortens. At this time, the pressing rod 170 and the hinge rod 180 jointly fix the upper end of the first rod 130, improving the stability of the first rod 130 and the second rod 140 during the drilling process.

[0030] When the length of the second rod 140 is less than the horizontal height of the drilling position, the regulating member controls the lower end of the first rod 130 to be inserted into the fixing groove of the fixing seat 120, and adjusts the position of the drilling arm 150 on the second rod 140 so that the drilling device 160 corresponds to the drilling position. At this time, the upper end of the second rod 140 is connected to the fixing plate through the second joint, so that the pressing rod 170 abuts against the top wall of the tunnel. During this process, the articulated rod 180 is in the state of the first length, and the time when the articulated rod 180 contacts the top wall of the tunnel is earlier than the time when the pressing rod 170 abuts against the top wall of the tunnel. Under the guidance of the arched tunnel top wall, the articulated rod 180 rotates relative to the fixing plate. During this process, the pressing rod 170 continuously shortens. When the articulated rod 180 abuts against the fixing block 190, the pressing rod 170 no longer shortens. At this time, the pressing rod 170 and the articulated rod 180 jointly fix the upper end of the second rod 140, improving the stability of the first rod 130 and the second rod 140 during the drilling process.

[0031] Further, when the articulated rod 180 abuts against the fixing block 190 at the first length, there is a first included angle between the articulated rod 180 and the pressing rod 170. When the articulated rod 180 abuts against the fixing block 190 at the second length, there is a second included angle between the articulated rod 180 and the pressing rod 170, and the first included angle is less than the second included angle. When the second rod 140 is inserted into the fixing seat 120 and the drilling arm 150 is at the lower half of the second rod 140, the articulated rod 180 is in the second length; then when the drilling position is close to the ground, the regulating member controls the lower end of the second rod 140 to be inserted into the fixing groove of the fixing seat 120, and adjusts the position of the drilling arm 150 on the second rod 140 so that the drilling device 160 corresponds to the drilling position. At this time, the upper end of the first rod 130 is connected to the fixing plate through the first joint, so that the pressing rod 170 abuts against the top wall of the tunnel. During this process, the articulated rod 180 is in the state of the second length, and the time when the articulated rod 180 contacts the top wall of the tunnel is later than the time when the pressing rod 170 abuts against the top wall of the tunnel. Under the guidance of the arched tunnel top wall, the articulated rod 180 rotates relative to the fixing plate. During this process, the pressing rod 170 continuously shortens. When the articulated rod 180 abuts against the fixing block 190, the pressing rod 170 no longer shortens. At this time, the pressing rod 170 and the articulated rod 180 jointly fix the upper end of the first rod 130, and the shortening degree of the pressing rod 170 increases, further improving the stability of the first rod 130 and the second rod 140 during the drilling process.

[0032] In one embodiment, the jacking rod 170 includes a fixed section 171 and a sliding section 172. The fixed section 171 is fixedly connected to the fixed plate. The inside of the fixed section 171 is hollow. One end of the sliding section 172 is slidably inserted into the inside of the fixed section 171. A compression spring 173 is arranged inside the fixed section 171. One end of the compression spring 173 is fixedly connected to the sliding section 172, and the other end of the compression spring 173 is fixedly connected to the fixed section 171. In the initial state, the length of the jacking rod 170 is in the longest state, and the compression spring 173 is in the original length state. As the length of the jacking rod 170 gradually shortens, the amount of compression of the compression spring 173 gradually increases. Then, the extrusion force of the upper end of the jacking rod 170 on the tunnel top wall gradually increases, and the extrusion force of the lower end of the jacking rod 170 on the upper end of the first rod 130 or the upper end of the second rod 140 gradually increases, thereby improving the stability of the first rod 130 and the second rod 140 during the drilling process.

[0033] In one embodiment, the hinged rod 180 includes a first section 181 and a second section 182. The first section 181 is hinged to the fixed plate. The inside of the first section 181 is hollow. One end of the second section 182 is slidably inserted into the inside of the first section 181, so that the first section 181 and the second section 182 are always in a coaxial state. A first adjustment hole is arranged on the first section 181. Two second adjustment holes are arranged on the second section 182. The two second adjustment holes are spaced along the length direction of the second section 182. An adjustment rod is arranged in the first adjustment hole. The adjustment rod can enter any one of the second adjustment holes. When the adjustment rod is simultaneously in one second adjustment hole and the first adjustment hole, the adjustment rod can limit the change in the length of the hinged rod 180. The staff can adjust the second adjustment hole where the adjustment rod is located according to the drilling position, thereby changing the length of the hinged rod 180.

[0034] In one embodiment, the regulating member includes a fixed rack 210 and a sliding block 220. A vertical guide rail is provided on the second rod 140, and the sliding block 220 is slidably arranged along the guide rail. A first locking member is provided on the sliding block 220, and the first locking member is used to fix the sliding block 220 on the guide rail. By setting the first locking member, the position of the sliding block 220 on the second rod 140 is fixed. The fixed rack 210 is fixedly arranged on the first rod 130, and the fixed rack 210 extends along the length direction of the first rod 130. An adjusting gear is rotatably arranged on the sliding block 220, and the adjusting gear is always engaged with the fixed rack 210. When the articulated rod 180 does not abut against the fixed block 190, the staff needs to continuously rotate the adjusting gear to make the first rod 130 and the second rod 140 move relative to each other. According to whether the lower end of the first rod 130 or the second rod 140 is inserted into the fixed slot, the staff adjusts the direction of rotating the adjusting gear. For example, when the lower end of the first rod 130 is inserted into the fixed slot, the staff rotates the adjusting gear clockwise to make the upper end of the second rod 140 gradually move upward. When the lower end of the second rod 140 is inserted into the fixed slot, the staff rotates the adjusting gear counterclockwise to make the upper end of the first rod 130 gradually move upward. When rotating the adjusting gear, the first locking member is in a state of fixing the sliding block 220 on the guide rail.

[0035] In one embodiment, the first locking member includes a plurality of first screws. The first screws are threadedly connected to the sliding block 220, and the first screws can abut against the second rod 140. The staff ensures that each first screw is in a state of tightly abutting against the second rod 140 by rotating the plurality of first screws one by one, thereby fixing the sliding block 220 on the guide rail. After the sliding block 220 is fixed on the guide rail, the staff can rotate the adjusting gear to ensure that the upper end of the top rod 170 abuts against the tunnel top wall.

[0036] In one embodiment, a connecting block 230 is hinged to the end of the drilling arm 150. The connecting block 230 can be slidably arranged along the second rod 140. A second locking member is provided on the connecting block 230, and the second locking member is used to fix the connecting block 230 at any position on the second rod 140. By setting the connecting block 230 and the second locking member, it is ensured that the drilling arm 150 can form an arbitrary angle with the second rod 140, and it is ensured that the drilling arm 150 can be arbitrarily adjusted in the height of the second rod 140.

[0037] In one embodiment, a vertical adjusting rack 240 is fixedly arranged on the second rod 140. A rotating gear is rotatably arranged on the connecting block 230, and the rotating gear is always engaged with the adjusting rack 240. When it is necessary to adjust the position of the drilling arm 150 on the second rod 140, the staff rotates the rotating gear to change the connecting block 230 in the height direction of the second rod 140, thereby facilitating the correspondence between the drilling device 160 and the drilling position.

[0038] In one of the company embodiments, the second locking member includes a plurality of second screws. The second screws are threadedly connected to the connecting block 230, and the second screws can abut against the second rod 140. By rotating the rotating gear, the staff can adjust the connecting block 230 in the height direction of the second rod 140. After the adjustment of the connecting block 230 in the height direction of the second rod 140 is completed, the staff rotates the plurality of second screws simultaneously, so that the position of the connecting block 230 on the second rod 140 is fixed, thereby improving the stability of the drilling device during the drilling process.

[0039] In one of the embodiments, an auxiliary block 250 is slidably arranged on the drilling arm 150. The auxiliary block 250 can slide along the length direction of the drilling arm 150. An auxiliary rod 260 is hinged to the auxiliary block 250, and the other end of the auxiliary rod 260 is hinged to the connecting block 230. The auxiliary rod 260 is used for auxiliary support of the drilling arm 150. Since the drilling arm 150 and the connecting block 230 are in a hinged state, when the drilling device 160 is installed on the drilling arm 150, the drilling arm 150 is prone to relative rotation with the connecting block 230. When the drilling device 160 corresponds to the drilling position, there is a certain included angle between the auxiliary rod 260 and the drilling arm 150. If the staff restricts the sliding of the auxiliary block 250 on the drilling arm 150, the auxiliary rod 260 can form a diagonal strut, thereby ensuring the stability of the drilling arm 150 during the working process.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable drilling support for an arched tunnel, characterized in that, Including: A bottom plate, on which a fixing seat with an upward opening is provided; A support member, the support member includes a first rod and a second rod, both the first rod and the second rod are vertically arranged, the first rod and the second rod are slidably connected, and both the first rod and the second rod can be inserted into the fixing seat; a drilling arm is provided on the second rod, and the horizontal height of the drilling arm on the second rod is adjustable; A jacking rod, the jacking rod is vertically arranged, the jacking rod can be telescopically arranged, and the upper end of the jacking rod can abut against the top wall of the tunnel; a fixing plate is provided at the lower end of the jacking rod, and a first joint and a second joint are provided on the fixing plate, the first joint can be connected to the upper end of the first rod, and the second joint can be connected to the upper end of the second rod; A regulating member, the regulating member can adjust the insertion of the first rod into the fixing seat, and at the same time adjust the connection of the upper end of the second rod to the jacking rod through the second joint; the regulating member can also adjust the insertion of the second rod into the fixing seat, and at the same time adjust the connection of the upper end of the first rod to the jacking rod through the first joint.

2. The adjustable drilling support for an arched tunnel according to claim 1, characterized in that: A hinged rod is provided on the fixing plate, one end of the hinged rod is hinged to the upper end surface of the fixing plate, the hinged rod has a first length and a second length, the first length is greater than the second length, a fixing block is provided on the top wall of the tunnel, and the end of the hinged rod away from the fixing plate can abut against the fixing block; when the hinged rod abuts against the fixing block with the first length, there is a first included angle between the hinged rod and the jacking rod, when the hinged rod abuts against the fixing block with the second length, there is a second included angle between the hinged rod and the jacking rod, and the first included angle is less than the second included angle; when the second rod is inserted into the fixing seat and the drilling arm is at the lower half of the second rod, the hinged rod is in the second length.

3. The adjustable drilling support for an arched tunnel according to claim 2, characterized in that: The hinged rod includes a first section and a second section, the first section is hinged to the fixing plate, the first section is hollow inside, and one end of the second section is slidably inserted into the first section; a first adjusting hole is provided on the first section, and two second adjusting holes are provided on the second section, and the two second adjusting holes are arranged at intervals along the length direction of the second section; an adjusting rod is provided in the first adjusting hole, and the adjusting rod can enter any one of the second adjusting holes.

4. The adjustable drilling support for an arched tunnel according to claim 1, characterized in that: The regulating member includes a fixed rack and a sliding block, a vertical guide rail is provided on the second rod, the sliding block is slidably arranged along the guide rail, and a first locking member is provided on the sliding block, and the first locking member is used to fix the sliding block on the guide rail; the fixed rack is fixedly arranged on the first rod, and an adjusting gear is rotatably arranged on the sliding block, and the adjusting gear is always meshed with the fixed rack.

5. The adjustable drilling support for an arched tunnel according to claim 4, characterized in that: The first locking member includes a plurality of first screws, the first screws are threadedly connected to the sliding block, and the first screws can abut against the second rod.

6. The adjustable drilling support for an arched tunnel according to claim 1, wherein: A connecting block is hinged to the end of the drilling arm. The connecting block can be slidably arranged along the second rod. A second locking member is arranged on the connecting block, and the second locking member is used to fix the connecting block at any position of the second rod.

7. The adjustable drilling support for an arched tunnel according to claim 6, characterized in that: A vertical adjusting rack is fixedly arranged on the second rod. A rotating gear is rotatably arranged on the connecting block, and the rotating gear is always engaged with the adjusting rack.

8. The adjustable drilling support for an arched tunnel according to claim 6, characterized in that: The second locking member includes a plurality of second screws. The second screws are threadedly connected to the connecting block, and the second screws can abut against the second rod.

9. The adjustable drilling support for an arched tunnel according to claim 6, wherein: An auxiliary block is slidably arranged on the drilling arm. An auxiliary rod is hinged to the auxiliary block, and the other end of the auxiliary rod is hinged to the connecting block. The auxiliary rod is used to assist in supporting the drilling arm.

10. The adjustable drilling support for an arched tunnel according to claim 1, characterized in that: The jacking rod includes a fixed section and a sliding section. The fixed section is fixedly connected to the fixed plate. The fixed section is hollow inside. One end of the sliding section is slidably inserted into the fixed section. A compression spring is arranged inside the fixed section. One end of the compression spring is fixedly connected to the sliding section, and the other end of the compression spring is fixedly connected to the fixed section.

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