CN216839620U - Rock arm hook machine for soft stone square roadbed construction - Google Patents
Rock arm hook machine for soft stone square roadbed construction Download PDFInfo
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- CN216839620U CN216839620U CN202123440864.XU CN202123440864U CN216839620U CN 216839620 U CN216839620 U CN 216839620U CN 202123440864 U CN202123440864 U CN 202123440864U CN 216839620 U CN216839620 U CN 216839620U
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Abstract
The utility model discloses a rock arm hook machine for soft stone roadbed construction, which comprises a rubber-tyred or crawler-type hook machine body, wherein a rock arm is arranged on the hook machine body, an installation cavity is arranged on the hook machine body, a counterweight component comprises a counterweight part and a fixing part for fixing the counterweight block, and the fixing part is movably connected in the installation cavity; the driving assembly is connected with the fixing piece, and the fixing piece can receive the driving of the driving assembly to move in the installation cavity; the operating assembly is arranged in the hook machine body and connected with the driving assembly; the guide limiting assembly is arranged between the fixing piece and the installation cavity and used for limiting the movement of the fixing piece. The utility model provides a soft stone side road bed construction is with rock arm hook machine can drive the position of counter weight component through operating module and drive assembly and adjust, so can be according to the needs of construction environment and operation, drive counter weight component to suitable position, and the counter weight component can be to the gravity balance that carries on of hook machine organism.
Description
Technical Field
The utility model relates to a road bed construction technical field especially relates to a soft stone side is rock arm hook machine for road bed construction.
Background
Rock excavation is often required in the construction of a rock subgrade, and hard rock excavation often requires the application of significant energy to a portion of the rock face to fragment the rock. One conventional technique is to drill a plurality of holes in the rock face, then insert an explosive device into the hole and detonate the device, the explosive force fractures the rock, then remove rock residue and prepare the rock face for the next drilling operation, and as environmental protection and security become more and more stringent, blast mode rock fragmentation is managed. The other technology is that the breaking hammer is used for breaking rocks, but the breaking hammer has the problems of high use cost and low efficiency, so that rock arm hook machines are used in a plurality of existing constructions, the rock arm hook machines can well meet the requirements of construction, but the rock arm hook machines have unstable centers in the construction of soft stone roadbed, and the situation of inclination and even rollover easily occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a soft stone side is rock arm hook machine for road bed construction to solve the above-mentioned weak point among the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a soft stone side road bed construction is with rock arm hook machine, includes the hook machine organism of tire formula or crawler-type, be provided with the rock arm on the hook machine organism, still include:
the hook machine body is provided with an installation cavity, the counterweight assembly comprises a counterweight part and a fixing part for fixing the counterweight block, and the fixing part is movably connected in the installation cavity;
the driving assembly is connected with the fixing piece, and the fixing piece can receive the driving of the driving assembly to move in the installation cavity;
the operating assembly is arranged in the hook machine body and is connected with the driving assembly;
the guide limiting assembly is arranged between the fixing piece and the installation cavity and used for limiting the movement of the fixing piece.
Foretell soft stone side is rock arm hook machine for road bed construction, the mounting includes PMKD and fixed the setting and is in last fixed frame of PMKD, it is right to be provided with on the PMKD the dead lever that the balancing weight goes on fixing.
The rock arm hooking machine for the construction of the soft stone roadbed is characterized in that the counterweight part comprises a plurality of balancing weights, fixing holes corresponding to the fixing rods are formed in the balancing weights, and the balancing weights can be sequentially and superposedly fixed on the fixing rods.
Foretell soft stone side is rock arm hook machine for road bed construction, the side of going up of balancing weight is provided with the bellying, the bottom of balancing weight is provided with concave part.
According to the rock arm hooking machine for the construction of the soft stone roadbed, the side walls on the two opposite sides of the installation cavity are provided with the sliding limiting grooves, the two opposite sides of the fixing piece are provided with the sliding plates, and the sliding plates are connected in the sliding limiting grooves in a sliding mode.
Foretell soft stone side is rock arm hook machine for road bed construction, direction restriction subassembly is including setting up the sliding guide way of the relative both sides of installation cavity, be provided with direction wire rope in the sliding guide way, the relative both sides of mounting all are provided with the guide holder, guide holder sliding connection is in on the direction wire rope.
Foretell soft stone side road bed construction is with rock arm hook machine still including blockking the supporting component, it includes U type pedestal and driving piece to block the supporting component, U type pedestal sliding connection be in the installation cavity, U type pedestal can accept the drive of driving piece is in order to follow the installation cavity motion.
Foretell soft stone side is rock arm hook machine for road bed construction, the driving piece includes the drive lead screw, the bottom of installation cavity is provided with the bar open slot, the drive lead screw sets up in the bar open slot, the bottom of U type pedestal is provided with the motion piece, be provided with on the motion piece with drive lead screw assorted screw, the drive lead screw is rotatory can correspond the drive U type pedestal is followed linear motion is to the bar open slot.
The rock arm hooking machine for the construction of the soft stone roadbed comprises two fixing pieces, wherein the two fixing pieces are arranged in the installation cavity in parallel, and each fixing piece is provided with one driving assembly.
In the rock arm hooking machine for soft rock roadbed construction, each fixing piece is correspondingly connected with one guide limiting component and one blocking support component.
In the technical scheme, the utility model provides a pair of soft stone side is rock arm hook machine for road bed construction has following beneficial effect:
the embodiment of the utility model provides a soft stone side road bed construction is with rock arm hook machine, including the hook machine organism, be provided with the counter weight component on the hook machine organism, drive assembly, operation subassembly and direction restriction subassembly, can drive the regulation to the position of counter weight component through operation subassembly and drive assembly, so in the work progress, can be according to the needs of construction environment and operation, drive counter weight component to suitable position, the counter weight component can be to carrying out gravity balance of hook machine organism, avoid rock arm hook machine the condition that the slope appears or turns on one's side in the work progress.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a rock arm hooking machine for soft rock roadbed construction provided by an embodiment of the utility model;
fig. 2 is a schematic structural diagram of an installation cavity provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fixing member according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a counterweight provided in the embodiment of the present invention;
fig. 5 is a schematic structural view of an installation cavity according to another embodiment of the present invention.
Description of reference numerals:
1. a hook machine body;
1.1, a rock arm; 1.2, installing a cavity;
2. a counterweight assembly;
2.1, a counterweight; 2.2, a balancing weight; 2.3, a convex part; 2.4, groove part;
3. a fixing member;
3.1, fixing the bottom plate; 3.2, fixing the frame; 3.3, fixing a rod; 3.4, a guide seat;
4. a drive assembly;
5. a guidance limit assembly;
5.1, sliding guide grooves; 5.2, guiding a steel wire rope;
6. a barrier support assembly;
6.1, a U-shaped seat body; 6.2, a driving piece; 6.3, driving a lead screw; 6.4, a strip-shaped open slot; 6.5, motion block.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-5, an embodiment of the present invention provides a rock arm hooking machine for soft stone roadbed construction, including a rubber-tyred or caterpillar hooking machine body 1, where the hooking machine body 1 is provided with a rock arm 1.1, and further includes a counterweight component 2, a driving component 4, an operating component and a guiding limiting component 5, the hooking machine body 1 is provided with an installation cavity 1.2, the counterweight component 2 includes a counterweight 2.1 and a fixing component 3 for fixing the counterweight 2.2, and the fixing component 3 is movably connected in the installation cavity 1.2; the driving component 4 is connected with the fixing part 3, and the fixing part 3 can be driven by the driving component 4 to move in the installation cavity 1.2; the operating component is arranged in the hook machine body 1 and is connected with the driving component 4; the guide limiting assembly 5 is arranged between the fixing member 3 and the mounting cavity 1.2 and used for limiting the movement of the fixing member 3.
Specifically, the hooking machine body 1 may be a tire type or a crawler type, the hooking machine body 1 has the same structure as the rock arm 1.1 in the prior art, the rock arm 1.1 is disposed on the hooking machine body 1, the rock arm 1.1 may have the structure shown in the drawing, or may have other structures in the prior art, such as a cutting assembly, the present embodiment is improved over the prior art in that a counterweight assembly 2 is disposed on the hooking machine body 1, the counterweight assembly 2 can adjust the position thereof as required, the balance of the rock arm 1.1 hooking machine is increased, so that the rock arm 1.1 hooking machine can be safely constructed on a soft rock roadbed, a mounting cavity 1.2 is disposed on the hooking machine body 1, the machine body mounting cavity 1.2 is used for mounting the counterweight assembly 2, when the hooking machine body 1 is of a rotary type, the counterweight assembly 2 can synchronously rotate with the hooking machine body 1, the counterweight component 2 comprises a counterweight 2.1 and a fixing part 3, the counterweight 2.1 can be a counterweight 2.2, at least one counterweight 2.2 is provided, optionally, a plurality of counterweights 2.2 are provided, a plurality of counterweights 2.2 can be selectively installed in the installation cavity 1.2 according to needs, if one counterweight 2.2 is 100KG, when 3 counterweight 2.2 are put in the installation cavity 1.2, the weight of the counterweight 2.1 is 300KG, when 5 counterweight 2.2 are put in the installation cavity 1.2, the weight of the counterweight 2.1 is 500KG, the weights of the counterweight 2.2 can be the same or different, if counterweight 2.2 with various different weight specifications can be arranged, the overall weight of the counterweight 2.1 can be adjusted according to needs, the fixing part 3 is used for installing and fixing the counterweight 2.1, the fixing part 3 can be a fixing part, the counterweight 2.1 can be fixed in the fixing part 3, fixed part 3 swing joint is in installation cavity 1.2, and fixed part 3 can sliding connection in installation cavity 1.2, also can rotate to be connected in installation cavity 1.2, and is corresponding, and fixed part 3 can be followed a direction seat straight reciprocating motion, also can be along the predetermined track and be circumferential motion, so can adjust the drive of counter weight component 2 to suitable position, through counter weight component 2 increase hook machine organism 1's equilibrium.
In this embodiment, the driving component 4 is used for driving the counterweight component 2, so that the position of the counterweight component 2 can be adjusted, the driving component 4 is connected with the fixing part 3, that is, the driving component 4 drives the fixing part 3 to move in the installation cavity 1.2 by driving the fixing part 3, the fixing part 3 correspondingly drives the counterweight component 2.1 to move, so as to adjust the position of the counterweight component 2.1, the driving component 4 can be a hydraulic driving structure or a gear driving structure, an operating component is arranged in the hook machine body 1, the driving component 4 for the operating component is used for controlling, the operating component can be a driving button, so as to control whether the driving component 4 works or not correspondingly, the operating component can also be a driving handle or a driving hand lever, that is, a driver operates the operating component in the hook machine body 1, so that the driving component 4 works, the operating assembly and the driving assembly 4 are common structures in the prior art, and are not described herein again, a guiding and limiting assembly 5 is further arranged between the installation cavity 1.2 and the fixing member 3, the guiding and limiting assembly 5 is used for limiting the movement of the fixing member 3, the guiding and limiting assembly 5 can be a guiding block and a guiding groove, and can also be a traction rope and a traction block arranged on the fixing member 3, so that the movement of the fixing member 3 can be prevented from deviating through the guiding and limiting assembly 5.
The embodiment of the utility model provides a soft stone side road bed construction is with rock arm 1.1 hook machine, including hook machine organism 1, be provided with counter weight component 2 on hook machine organism 1, drive assembly 4, operation subassembly and direction restriction subassembly 5, can drive the regulation to counter weight component 2's position through operation subassembly and drive assembly 4, so in the work progress, can be according to the needs of construction environment and operation, drive counter weight component 2 to suitable position, counter weight component 2 can be to the gravity balance that carries on of hook machine organism 1, avoid rock arm 1.1 hook machine to appear the slope or the condition of turning on one's side in the work progress.
In the embodiment provided by the utility model, preferably, the fixing member 3 comprises a fixing bottom plate 3.1 and a fixing frame 3.2 fixedly arranged on the fixing bottom plate 3.1, and the fixing bottom plate 3.1 is provided with a fixing rod 3.3 for fixing the balancing weight 2.2; dead lever 3.3 has two, and two dead levers 3.3 set up perpendicularly on PMKD 3.1, are provided with the restriction piece on dead lever 3.3, can carry out high connection through the screw thread mode between restriction piece and the dead lever 3.3, so put into balancing weight 2.2 back on dead lever 3.3, and accessible restriction piece is fixed balancing weight 2.2.
In the embodiment provided by the utility model, preferably, the counterweight 2.1 comprises a plurality of counterweights 2.2, the counterweights 2.2 are provided with fixing holes corresponding to the fixing rods 3.3, and the counterweights 2.2 can be sequentially superposed and fixed on the fixing rods 3.3; the upper side surface of the balancing weight 2.2 is provided with a convex part 2.3, and the bottom of the balancing weight 2.2 is provided with a groove part 2.4; boss 2.3 and concave part 2.4 correspond the setting, also be provided with boss 2.3 on PMKD 3.1, so when using, install balancing weight 2.2 below on PMKD 3.1, when the installation, the fixed link 3.3 can pass the fixed orifices, the concave part 2.4 of balancing weight 2.2 corresponds the block with boss 2.3 on PMKD 3.1, after balancing weight 2.2 below is placed, again install each balancing weight 2.2 superpose in proper order, make the fixed link 3.3 pass the fixed orifices on each balancing weight 2.2 in proper order, the concave part 2.4 of top balancing weight 2.2 bottom corresponds the block with boss 2.3 on the balancing weight 2.2 of below, fix on fixed link 3.3 through limiting the piece at last, limiting piece fixes balancing weight 2.2 of the top, so accomplish the fixing to each balancing weight 2.2.
In the embodiment provided by the utility model, preferably, the side walls of the two opposite sides of the installation cavity 1.2 are provided with sliding limiting grooves, the two opposite sides of the fixing part 3 are provided with sliding plates, and the sliding plates are connected in the sliding limiting grooves in a sliding way; when the fixed part 3 is driven by the driving component 4, the fixed part 3 can directly move along the sliding limiting groove through the sliding plate, so that the fixed part 3 moves along the installation cavity 1.2, and a sliding connecting piece can also be arranged between the fixed part 3 and the bottom of the installation cavity 1.2, so that a sliding strip is arranged at the bottom of the fixed part 3, a sliding groove is arranged on the installation cavity 1.2, the sliding strip is connected in the sliding groove in a sliding mode, and the fixed part 3 can be supported through the sliding strip and the sliding groove.
In the embodiment provided by the utility model, preferably, the guiding limiting component 5 comprises sliding guide grooves 5.1 arranged at two opposite sides of the installation cavity 1.2, guiding steel wire ropes 5.2 are arranged in the sliding guide grooves 5.1, guiding seats 3.4 are arranged at two opposite sides of the fixing component 3, and the guiding seats 3.4 are connected to the guiding steel wire ropes 5.2 in a sliding manner; slide guide slot 5.1 and installation cavity 1.2 parallel arrangement, direction wire rope 5.2 sets up along slide guide slot 5.1's length direction, but guide holder 3.4 and mounting 3 integral type set up, also can split type setting, so carry out the in-process of driven at drive assembly 4 to mounting 3, guide holder 3.4 slides along direction wire rope 5.2, play the effect of restriction and support to the motion of mounting 3, avoid the skew to appear in the motion of mounting 3.
In the embodiment provided by the utility model, preferably, the device further comprises a blocking support assembly 6, wherein the blocking support assembly 6 comprises a U-shaped seat body 6.1 and a driving piece 6.2, the U-shaped seat body 6.1 is connected in the installation cavity 1.2 in a sliding manner, and the U-shaped seat body 6.1 can receive the driving of the driving piece 6.2 to move along the installation cavity 1.2; the U-shaped seat body 6.1 can receive the drive of driving piece 6.2 and move along installation cavity 1.2, the open one side of U-shaped seat body 6.1 corresponds to mounting 3, U-shaped seat body 6.1 is arranged that, mounting 3 can move to the inside of U-shaped seat body 6.1 along the opening of U-shaped seat body 6.1, when mounting 3 moves to the inside of U-shaped seat body 6.1, U-shaped seat body 6.1 realizes stopping and restriction to mounting 3 for mounting 3 stop the motion.
In the embodiment provided by the utility model, preferably, the driving member 6.2 comprises a driving screw 6.3, the bottom of the installation cavity 1.2 is provided with a strip-shaped open slot 6.4, the driving screw 6.3 is arranged in the driving screw 6.3, the bottom of the U-shaped seat body 6.1 is provided with a moving block 6.5, the moving block 6.5 is provided with a screw hole matched with the driving screw 6.3, and the driving screw 6.3 rotates to correspondingly drive the U-shaped seat body 6.1 to do linear motion along the strip-shaped open slot 6.4; the strip-shaped open slot 6.4 can be one, or can be two arranged in parallel, the moving block 6.5 is in transmission connection with the driving screw 6.3 through a ball, so that the driving screw 6.3 can rotate to correspondingly drive the moving block 6.5 to do linear motion along the driving screw 6.3, the moving block 6.5 is arranged at one end, close to the fixing block 3, of the U-shaped seat body 6.1, the U-shaped seat body 6.1 has a certain length, when the moving block 6.5 moves to the end part along the driving screw 6.3, the U-shaped seat body 6.1 is moved to the outer side of the installation cavity 1.2, the fixing block 3 and the counterweight 2.1 can move to the inside of the U-shaped seat body 6.1, and therefore the movement strokes of the fixing block 3 and the counterweight 2.1 are increased, and the balancing effect on the hook machine body 1 is improved.
In another embodiment provided by the present invention, preferably, there are two fixing members 3, two fixing members 3 are disposed in parallel in the installation cavity 1.2, each fixing member 3 is disposed with a driving component 4, each fixing member 3 includes a fixing bottom plate 3.1 and a fixing frame 3.2 fixedly disposed on the fixing bottom plate 3.1, the counterweight 2.2 is fixed by the fixing frame 3.2, the two fixing members 3 are slidably connected in the installation cavity 1.2 respectively, the bottom of the fixing bottom plate 3.1 is slidably connected with the installation cavity 1.2, one side of the fixing frame 3.2 is also slidably connected with the installation cavity 1.2, two operating components are correspondingly disposed in the hook machine body 1, that is, each driving component 4 is correspondingly connected with an operating component respectively, so as to be able to control the two fixing members 3 to move independently through the operating components and the driving components 4, thereby realizing the balance of the hook machine body 1 from different directions, the phenomenon that the hook machine body 1 inclines or turns over is avoided.
In another embodiment provided by the present invention, preferably, each fixing member 3 is correspondingly connected with a guiding and limiting component 5 and a blocking and supporting component 6; the direction restriction subassembly 5 is including setting up the sliding guide slot 5.1 in the relative both sides of installation cavity 1.2, be provided with a guide holder 3.4 on each mounting 3, guide holder 3.4 can the integral type with mounting 3 and set up, be provided with direction wire rope 5.2 in the sliding guide slot 5.1, guide holder 3.4 sliding connection is slided at direction wire rope 5.2, each blocks supporting component 6 and includes U type pedestal 6.1 and driving piece 6.2, U type pedestal 6.1 corresponds the setting with mounting 3, so each U type pedestal 6.1 can restrict and support the motion of mounting 3.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a soft stone side road bed construction is with rock arm hook machine, includes rubber-tyred or crawler-type hook machine organism, be provided with the rock arm on the hook machine organism, its characterized in that still includes:
the hook machine body is provided with an installation cavity, the counterweight assembly comprises a counterweight part and a fixing part for fixing the counterweight block, and the fixing part is movably connected in the installation cavity;
the driving assembly is connected with the fixing piece, and the fixing piece can receive the driving of the driving assembly to move in the installation cavity;
the operating assembly is arranged in the hook machine body and is connected with the driving assembly;
the guide limiting assembly is arranged between the fixing piece and the installation cavity and used for limiting the movement of the fixing piece.
2. The rock arm hooking machine for soft rock roadbed according to claim 1, wherein the fixing member comprises a fixing bottom plate and a fixing frame fixedly arranged on the fixing bottom plate, and a fixing rod for fixing the counterweight is arranged on the fixing bottom plate.
3. The rock arm hooking machine for soft rock roadbed of claim 2, wherein the weight member comprises a plurality of weight blocks, the weight blocks are provided with fixing holes corresponding to the fixing rods, and the plurality of weight blocks are sequentially fixed on the fixing rods in an overlapping manner.
4. The rock arm hooking machine for soft rock roadbed according to claim 3, wherein a convex portion is provided on an upper side surface of the weight block, and a concave portion is provided on a bottom portion of the weight block.
5. The rock arm hooking machine for soft rock roadbed according to claim 1, wherein the side walls of the installation cavity on opposite sides are provided with sliding restriction grooves, and the fixing member is provided with sliding plates on opposite sides, the sliding plates being slidably coupled in the sliding restriction grooves.
6. The rock arm hooking machine for soft rock roadbed construction according to claim 1, wherein the guide limiting component comprises sliding guide grooves arranged at two opposite sides of the installation cavity, guide steel wire ropes are arranged in the sliding guide grooves, guide seats are arranged at two opposite sides of the fixing piece, and the guide seats are connected to the guide steel wire ropes in a sliding manner.
7. The rock arm hooking machine for soft rock roadbed construction of claim 1, further comprising a blocking support component, wherein the blocking support component comprises a U-shaped seat body and a driving piece, the U-shaped seat body is slidably connected in the installation cavity, and the U-shaped seat body can be driven by the driving piece to move along the installation cavity.
8. The rock arm hook machine for the construction of the soft stone square roadbed as claimed in claim 7, wherein the driving member comprises a driving screw, the bottom of the installation cavity is provided with a strip-shaped open slot, the driving screw is arranged in the strip-shaped open slot, the bottom of the U-shaped seat body is provided with a moving block, the moving block is provided with a screw hole matched with the driving screw, and the driving screw rotates to correspondingly drive the U-shaped seat body to do linear motion along the strip-shaped open slot.
9. The rock arm hooking machine for soft rock roadbed according to claim 7, wherein the number of the fixing pieces is two, two fixing pieces are juxtaposed in the installation cavity, and one driving assembly is provided on each fixing piece.
10. The rock arm hooking machine for soft rock roadbed according to claim 9, wherein one of the guide restricting member and the blocking support member is connected to each of the fixing members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123440864.XU CN216839620U (en) | 2021-12-31 | 2021-12-31 | Rock arm hook machine for soft stone square roadbed construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123440864.XU CN216839620U (en) | 2021-12-31 | 2021-12-31 | Rock arm hook machine for soft stone square roadbed construction |
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| Publication Number | Publication Date |
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| CN216839620U true CN216839620U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123440864.XU Active CN216839620U (en) | 2021-12-31 | 2021-12-31 | Rock arm hook machine for soft stone square roadbed construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898398A (en) * | 2022-11-16 | 2023-04-04 | 苏尼特金曦黄金矿业有限责任公司 | Medium-length hole mining device and process for irregular thick and large ore body |
-
2021
- 2021-12-31 CN CN202123440864.XU patent/CN216839620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898398A (en) * | 2022-11-16 | 2023-04-04 | 苏尼特金曦黄金矿业有限责任公司 | Medium-length hole mining device and process for irregular thick and large ore body |
| CN115898398B (en) * | 2022-11-16 | 2023-11-03 | 苏尼特金曦黄金矿业有限责任公司 | Medium-length hole mining device and technology for irregular thick and large ore body |
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