CN211397473U - Lifting type synchronous drilling equipment - Google Patents
Lifting type synchronous drilling equipment Download PDFInfo
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- CN211397473U CN211397473U CN201922167716.1U CN201922167716U CN211397473U CN 211397473 U CN211397473 U CN 211397473U CN 201922167716 U CN201922167716 U CN 201922167716U CN 211397473 U CN211397473 U CN 211397473U
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- 238000005553 drilling Methods 0.000 title claims abstract description 118
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 29
- 230000009467 reduction Effects 0.000 claims description 13
- 230000003028 elevating effect Effects 0.000 claims 4
- 230000006872 improvement Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a synchronous drilling equipment of over-and-under type, including frame and many spinal branchs vaulting pole, be equipped with vertical moving mechanism and horizontal bubble in the frame, be equipped with a plurality of rigs in the vertical moving mechanism, the drilling end of rig sets up down, and the one end detachable of each bracing piece is connected in the frame, and the other end of each bracing piece extends towards the direction of keeping away from the frame, and the other end of each bracing piece is equipped with vertical adjustment mechanism. Time and labor are saved, and the working efficiency is high; and the levelness can be adjusted, and the accuracy of drilling can be guaranteed. The utility model discloses be applied to the engineering machine tool field.
Description
Technical Field
The utility model relates to an engineering machine tool field, concretely relates to synchronous drilling equipment of over-and-under type.
Background
The scale of the national traffic infrastructure is huge, and the total mileage of the existing cement pavement breaks through 200 kilometers and accounts for 45 percent of the total mileage of the highway. Civil airports reached 235, and about 320 were built by 2025 planning layout 370. The total length of the high-speed railway is 2.9 kilometres, which accounts for more than 2/3 of the total mileage of the high-speed railway in the world. The safe operation of the concrete pavement and the airport pavement is greatly influenced by diseases such as cracking and emptying of the cement pavement and the airport pavement, settlement of ballastless tracks of high-speed rails and the like. Because the diseases are high in concealment, complex and changeable in form and difficult to detect and repair, the existing excavation maintenance method influences traffic, wastes resources and pollutes the environment. Therefore, a non-aqueous reaction high polymer trenchless conduit grouting technology is developed by the team, effectively solves the problems and is widely applied to emergency rescue and repair of numerous projects. However, before grouting with the guide pipe, the guide pipe must be drilled and embedded on the damaged pavement and road surface, and most of the existing methods adopt manual drilling, which is time-consuming and labor-consuming.
Patent document No. CN204343977U discloses an advanced geology multi-hole site synchronous drilling trolley, which comprises a combined frame assembled by a plurality of horizontal frames from front to back, wherein the bottom of the combined frame is provided with traveling wheels and the bottom of the combined frame is provided with a plurality of hydraulic jacking devices from front to back; two horizontal steel rails which are arranged in parallel are arranged on each horizontal frame; the combined frame is provided with a rear side pushing frame, a rear limiting frame, a horizontal sliding frame, a hydraulic cylinder for pushing the horizontal sliding frame to horizontally slide, a plurality of horizontal drilling machines and a plurality of horizontal drilling rods, wherein the horizontal drilling machines and the plurality of horizontal drilling rods are all arranged on the horizontal sliding frame; a front end supporting table is arranged above the front portion of the combined type frame, and a limiting seat for limiting a plurality of horizontal drill rods is arranged on the front end supporting table.
The patent documents disclose that the drilling machine moves back and forth synchronously and realizes synchronous drilling, and no technical suggestion is provided for how to level the drilling machine during the drilling process.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a lifting type synchronous drilling device which saves time, labor and work efficiency; and the levelness can be adjusted, and the accuracy of drilling can be guaranteed.
In order to achieve the purpose, the utility model provides a synchronous drilling equipment of over-and-under type, including frame and many spinal branchs vaulting pole, be equipped with vertical moving mechanism and horizontal bubble in the frame, be equipped with a plurality of rigs in the vertical moving mechanism, the drilling end of rig sets up down, and the one end detachable of each bracing piece is connected in the frame, and the other end of each bracing piece extends towards the direction of keeping away from the frame, and the other end of each bracing piece is equipped with vertical adjustment mechanism.
The improved structure is characterized in that the rack comprises a chassis, a cross beam and at least two fixing rods, each fixing rod is vertically arranged on the chassis, the cross beam is connected between the fixing rods, and the vertical moving mechanism is arranged on the fixing rods, so that the improved structure is simple and convenient to install.
The improved vertical adjusting mechanism comprises a fixed seat and an adjusting bolt, the adjusting bolt is vertically and movably connected to the fixed seat, the other end of each supporting rod is connected to the corresponding adjusting bolt, and a handle is arranged on the adjusting bolt. When the adjusting bolt is adjusted, the adjusting bolt can be screwed, so that the height of one end, connected with the adjusting bolt, of the supporting rod is changed, meanwhile, the height of the other end of the supporting rod is also changed, and the frame is adjusted. Specifically, adjusting bolt's bottom activity is rotated and is connected on the fixing base, and the other end of bracing piece is equipped with the sleeve, is equipped with the internal thread on the sleeve, the sleeve is established on adjusting bolt through the internal thread transmission cover, and when rotating adjusting bolt, the sleeve can reciprocate on adjusting bolt.
The improved horizontal bubble drilling machine is characterized in that the vertical moving mechanism comprises a driving element, a reduction gearbox, two chain wheels and a fixing device, the driving element, the reduction gearbox, the two chain wheels and the fixing device are arranged on the machine frame, the fixing device is arranged on the machine frame in a vertical sliding mode, the driving element is connected with the reduction gearbox in a transmission mode, the two chain wheels are arranged on the machine frame in a rotating mode along the vertical direction, one chain wheel is connected with the driving element in a transmission mode, a transmission chain is connected between the two chain wheels, the transmission chain is connected with the fixing device in a. The driving element is a motor, a control panel is arranged on the rack, the control panel is electrically connected with the driving element, and the driving element can be controlled through the control panel. The reduction box can reduce the speed of the driving element, and the moment output by the driving element is larger, so that the reduction box can bear larger load. The driving element drives a chain wheel to rotate, the chain wheel drives a transmission chain to run, and the transmission chain can drive the fixing device to move up and down. Specifically, one chain wheel is arranged on the cross beam, the other chain wheel is arranged on the chassis, the driving element is arranged on the chassis, and the fixing device is arranged on the fixing rod in a sliding mode.
The chain wheel is further improved, at least one chain wheel is provided with a gear control card for clamping the chain wheel, and when the driving element stops rotating, the chain wheel can be clamped by the gear control card so as to prevent the chain wheel from rotating; when the driving element is started, the gear control card needs to be pulled away so as not to clamp the chain wheel, and the chain wheel can rotate. The gear control card can fix the fixing device, so that the fixing device is prevented from rotating accidentally and affecting the drilling accuracy of the drilling machine.
In a further improvement, the fixing device comprises a first plate and a second plate, the top surface and the bottom surface of the first plate are respectively provided with the second plate, the first plate is vertically and slidably arranged on the rack, the second plate is in chain transmission connection with the transmission chain, and the drilling machine and the horizontal bulb are arranged on the first plate. Preferably, a plurality of horizontal bubbles can be arranged on the first plate, so that whether all parts of the first plate are horizontal or not can be detected more accurately, and the drilling precision of the drilling machine can be ensured. The first plate has a supporting function on the drilling machine, so that the drilling machine can slide vertically along the rack. Specifically, the first plate is slidably arranged on the fixing rod.
In a further improvement, the first fixing plate is provided with a vertical clamping groove, the drilling machine is clamped in the clamping groove, and the clamping groove is provided with a fixing bolt. After the drilling machine is installed, the height of the drilling machine can be adjusted according to the height of each drilling machine and actual needs, after the drilling machine is adjusted, the drilling machine is fixed in the clamping groove through the adjusting bolt, adjustment is convenient, and improvement of synchronous drilling accuracy is facilitated.
In a further improvement, the lifting synchronous drilling equipment further comprises a buffer element, wherein the top end of the buffer element is connected with the top of the frame, and the bottom end of the buffer element is connected to the second plate. Elastic element is the spring, and the top and the bottom of spring link respectively have the spring holder, and a spring holder is connected on the crossbeam, and another spring holder is connected on the second plate. The elastic element has a buffering function, and can prevent the first plate and the second plate from colliding with the cross beam when moving upwards to damage the drilling machine.
Further improved, the reduction gearbox is connected with a hand-operated rotating handle in a transmission mode, and the hand-operated rotating handle can be rotated, so that the chain wheel and the transmission chain are driven to operate, and the vertical position of the drilling machine can be adjusted.
In a further improvement, the bottom end of the frame is provided with a plurality of rollers, and particularly, the rollers are arranged at the bottom end of the chassis. Through setting up a plurality of gyro wheels, be convenient for remove and transport frame. The roller comprises a directional wheel and a steering wheel, so that the movement of the frame is facilitated.
The utility model discloses a use method as follows:
step 1, firstly, pushing a frame to a pre-drilling position, installing a drilling machine according to the drilling depth and the drilling distance to be drilled, and installing a corresponding drill bit on the drilling machine;
and 5, after the drilling construction is finished, lifting the drilling machine to a certain height, putting down the gear control card, withdrawing the support rod, and loading the drilling machine.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect:
the utility model discloses a be provided with vertical moving mechanism in the frame, be provided with a plurality of rigs on the vertical moving mechanism, can drive a plurality of rigs simultaneously and remove suitable position through vertical moving mechanism during drilling to can realize the vertical synchronous drilling of a plurality of rigs. The levelness of frame can be responded to the level bubble in the frame to each bracing piece can be adjusted to vertical adjustment mechanism, thereby realizes the regulation to the frame levelness. Specifically, the quantity of bracing piece is four, and four spinal branch vaulting poles rotate respectively and connect four angles in the frame, and each bracing piece only can rotate along the horizontal direction, consequently, can bear the effort of vertical direction. The supporting rod can be adjusted through the vertical adjusting mechanism when the rack inclines to the certain angle, so that the end, connected with the rack, of the supporting rod can move vertically, and the rack can be adjusted. Simultaneously, can also increase the support area with ground through bracing piece and vertical adjustment mechanism, increase the steady of frame, ensure that the rig is more steady at the in-process of drilling.
The utility model can use a plurality of drilling machines to drill synchronously, thereby saving time, labor and work efficiency; and the levelness can be adjusted, and the accuracy of drilling can be guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a front view of a lift type synchronous drilling apparatus;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a connection relationship diagram of the first fixing plate, the clamping groove and the fixing bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, a lifting type synchronous drilling device includes a frame 1 and a plurality of support rods 2, a vertical moving mechanism 3 and a horizontal bubble are arranged on the frame 1, the vertical moving mechanism 3 is provided with a plurality of drilling machines 31, drill bit ends of the drilling machines 31 are arranged downward, one end of each support rod 2 is detachably connected to the frame 1, the other end of each support rod 2 extends in a direction away from the frame 1, and the other end of each support rod 2 is provided with a vertical adjusting mechanism 4.
The utility model discloses a be provided with vertical moving mechanism 3 in the frame 1, be provided with a plurality of rigs 31 on the vertical moving mechanism 3, can drive a plurality of rigs 31 simultaneously and remove suitable position through vertical moving mechanism 3 during drilling to can realize the vertical synchronous drilling of a plurality of rigs 31. The levelness of frame 1 can be responded to the level bubble on the frame 1 to each bracing piece 2 can be adjusted to vertical adjustment mechanism 4, thereby realizes the regulation to 1 levelness of frame. Specifically, the quantity of bracing piece 2 is four, and four bracing pieces 2 rotate respectively and connect four angles in frame 1, and each bracing piece 2 only can rotate along the horizontal direction, consequently, can bear the effort of vertical direction. When the rack 1 inclines to a certain angle, the supporting rod 2 can be adjusted through the vertical adjusting mechanism 4, so that the end, connected with the rack 1, of the supporting rod 2 moves vertically, and the rack 1 can be adjusted. Meanwhile, the supporting area of the machine frame 1 can be increased through the supporting rod 2 and the vertical adjusting mechanism 4, so that the stability of the drilling machine 31 is increased, and the drilling process is more stable.
The utility model can use a plurality of drilling machines 31 to drill synchronously, which saves time, labor and work efficiency; and the levelness can be adjusted, and the accuracy of drilling can be guaranteed.
In this embodiment, as a further improvement of the above technical solution, the rack 1 includes a chassis 11, a beam 12 and at least two fixing rods 13, each fixing rod 13 is vertically erected on the chassis 11, the beam 12 is connected between the fixing rods 13, and the vertical moving mechanism 3 is disposed on the fixing rods 13, so that the structure is simple and the installation is convenient.
In this embodiment, as the further improvement of above-mentioned technical scheme, vertical adjustment mechanism 4 includes fixing base 41 and adjusting bolt 42, and adjusting bolt 42 is vertical, swing joint on fixing base 41, and the other end of each bracing piece 2 is connected respectively on corresponding adjusting bolt 42, is equipped with the handle on adjusting bolt 42. During adjustment, the adjusting bolt 42 can be screwed, so that the height of one end of the support rod 2 connected with the adjusting bolt 42 is changed, and meanwhile, the height of the other end of the support rod 2 is also changed, thereby realizing the adjustment of the rack 1. Specifically, the bottom end of the adjusting bolt 42 is movably and rotatably connected to the fixing seat 41, the other end of the supporting rod 2 is provided with a sleeve, an internal thread is arranged on the sleeve, the sleeve is sleeved on the adjusting bolt 42 through an internal thread transmission sleeve, and when the adjusting bolt 42 is rotated, the sleeve can move up and down on the adjusting bolt 42.
In this embodiment, as a further improvement of the above technical solution, the vertical moving mechanism 3 includes a driving element 32, a reduction gearbox 33, two chain wheels 34 and a fixing device 5 which are arranged on the frame 1, the fixing device 5 is vertically slidably arranged on the frame 1, the driving element 32 is in transmission connection with the reduction gearbox 33, the two chain wheels 34 are rotatably arranged on the frame 1 along the vertical direction, one of the chain wheels 34 is in transmission connection with the driving element 32, a transmission chain 35 is connected between the two chain wheels 34, the transmission chain 35 is in transmission connection with the fixing device 5, and the horizontal bulb and the drilling machine 31 are arranged on the fixing device 5. The driving element 32 is a motor, a control panel is arranged on the frame 1, the control panel is electrically connected with the driving element 32, and the driving element 32 can be controlled through the control panel. The reduction gearbox 33 can decelerate the drive element 32 and make the torque output by the drive element 32 larger, and can bear larger load. The driving element 32 drives a chain wheel 34 to rotate, the chain wheel 34 drives the transmission chain 35 to rotate, and the transmission chain 35 can drive the fixing device 5 to move up and down. Specifically, one sprocket 34 is provided on the cross beam 12, the other sprocket 34 is provided on the chassis 11, the driving element 32 is provided on the chassis 11, and the fixing device 5 is slidably provided on the fixing rod 13.
In this embodiment, as a further improvement of the above technical solution, at least one sprocket 34 is provided with a gear control card 341 for locking the sprocket 34, and when the driving element 32 stops rotating, the gear control card 341 can be used to lock the sprocket 34, so that the sprocket 34 does not rotate; when the driving element 32 is started, the gear control card 341 needs to be pulled out so as not to be stuck to the sprocket 34, and the sprocket 34 can rotate. The gear control card 341 can fix the fixing device 5 to prevent the fixing device from accidentally rotating and affecting the drilling accuracy of the drilling machine 31.
In this embodiment, as a further improvement of the above technical solution, the fixing device 5 includes a first plate 51 and a second plate 52, the second plate 52 is respectively disposed on the top surface and the bottom surface of the first plate 51, the first plate 51 is vertically slidably disposed on the rack 1, the second plate 52 is in transmission connection with the transmission chain 35, and the drilling machine 31 and the horizontal bulb are disposed on the first plate 51. Preferably, a plurality of horizontal bubbles may be disposed on the first plate 51, so that whether all the parts of the first plate 51 are horizontal can be detected more accurately, and the drilling accuracy of the drilling machine 31 can be ensured. The first plate 51 supports the drilling machine 31 so that the drilling machine 31 can slide vertically along the frame 1. Specifically, the first plate 51 is slidably disposed on the fixing rod 13.
In this embodiment, as a further improvement of the above technical solution, the first plate 51 is provided with a vertical slot 511, the drilling machine 31 is clamped in the slot 511, and the slot 511 is provided with a fixing bolt 512. After the drilling machines 31 are installed, the height of the drilling machines 31 can be adjusted according to the height of each drilling machine 31 and actual requirements, after the adjustment is completed, the drilling machines 31 are fixed in the clamping grooves 511 through the adjusting bolts 42, the adjustment is convenient, and the improvement of the accuracy of synchronous drilling is facilitated.
In this embodiment, as a further improvement of the above technical solution, the lifting type synchronous drilling device further includes a buffer element 6, a top end of the buffer element 6 is connected to a top of the frame 1, and a bottom end of the buffer element 6 is connected to the second plate 52. The buffer element 6 is a spring, the top end and the bottom end of the spring are respectively connected with a spring seat, one spring seat is connected to the cross beam 12, and the other spring seat is connected to the second plate 52. The buffer element 6 has a buffer function, and can prevent the first plate 51 and the second plate 52 from colliding with the cross beam 12 when moving upwards, and damaging the drilling machine 31.
In this embodiment, as the further improvement of above-mentioned technical scheme, the transmission even has hand turning handle 36 on reducing gear box 33, can also be through rotating hand turning handle 36 to drive sprocket 34 and driving chain 35 operation, and then realize the regulation to rig 31 upper and lower position.
In this embodiment, as a further improvement of the above technical solution, the bottom end of the frame 1 is provided with a plurality of rollers 14, specifically, the rollers 14 are arranged at the bottom end of the chassis 11. By providing a plurality of rollers 14, it is convenient to move and transport the frame 1. The rollers 14 include a directional wheel and a steering wheel to facilitate movement of the frame 1.
The utility model discloses a use method as follows:
step 1, firstly, pushing a frame 1 to a pre-drilling position, installing a drilling machine 31 according to the drilling depth and the drilling distance to be drilled, and installing a corresponding drill bit on the drilling machine 31;
and 5, after the drilling construction is finished, lifting the drilling machine 31 to a certain height, putting down the gear control card 341, withdrawing the support rod 2, and loading.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a synchronous drilling equipment of over-and-under type, its characterized in that, includes frame and many spinal branchs vaulting pole, be equipped with vertical moving mechanism and horizontal bubble in the frame, be equipped with a plurality of rigs in the vertical moving mechanism, the drill bit end of rig sets up down, and the one end detachable of each bracing piece is connected in the frame, and the other end of each bracing piece extends towards the direction of keeping away from the frame, and the other end of each bracing piece is equipped with vertical adjustment mechanism.
2. The lifting type synchronous drilling equipment as claimed in claim 1, wherein the vertical adjusting mechanism comprises a fixed seat and an adjusting bolt, the adjusting bolt is vertically and movably connected to the fixed seat, the other end of each supporting rod is connected to the corresponding adjusting bolt, and a handle is arranged on the adjusting bolt.
3. The lifting type synchronous drilling equipment as claimed in claim 1, wherein the vertical moving mechanism comprises a driving element, a reduction gearbox, two chain wheels and a fixing device, the driving element, the reduction gearbox, the two chain wheels and the fixing device are arranged on the frame, the fixing device is vertically arranged on the frame in a sliding mode, the driving element is in transmission connection with the reduction gearbox, the two chain wheels are rotatably arranged on the frame in the vertical direction, one chain wheel is in transmission connection with the driving element, a transmission chain is connected between the two chain wheels, the transmission chain is in transmission connection with the fixing device, and the horizontal bulb and the drilling machine are arranged on the fixing device.
4. The elevating synchronous drilling apparatus according to claim 3, wherein at least one of the sprockets has a gear control card for locking the sprocket.
5. The lifting synchronous drilling device as claimed in claim 3, wherein the fixing means comprises a first plate and a second plate, the second plate is respectively arranged on the top surface and the bottom surface of the first plate, the first plate is vertically slidably arranged on the frame, the second plate is connected with the transmission chain, and the drilling machine and the horizontal bulb are arranged on the first plate.
6. The lifting type synchronous drilling equipment as claimed in claim 5, wherein a vertical clamping groove is formed in the first fixing plate, the drilling machine is clamped in the clamping groove, and a fixing bolt is arranged on the clamping groove.
7. The elevating synchronous drilling apparatus according to claim 5, further comprising a buffer member, wherein a top end of the buffer member is connected to a top of the frame, and a bottom end of the buffer member is connected to the second plate.
8. The lifting type synchronous drilling equipment as claimed in claim 3, wherein the reduction gearbox is in transmission connection with a hand-operated rotating handle.
9. The elevating synchronous drilling device as claimed in claim 1, wherein the frame comprises a chassis, a cross beam and at least two fixing rods, each fixing rod is vertically erected on the chassis, the cross beam is connected between the fixing rods, and the vertical moving mechanism is arranged on the fixing rods.
10. The elevating synchronous drilling apparatus as claimed in claim 1, wherein a plurality of rollers are provided at a bottom end of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922167716.1U CN211397473U (en) | 2019-12-06 | 2019-12-06 | Lifting type synchronous drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922167716.1U CN211397473U (en) | 2019-12-06 | 2019-12-06 | Lifting type synchronous drilling equipment |
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| Publication Number | Publication Date |
|---|---|
| CN211397473U true CN211397473U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922167716.1U Active CN211397473U (en) | 2019-12-06 | 2019-12-06 | Lifting type synchronous drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211397473U (en) |
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2019
- 2019-12-06 CN CN201922167716.1U patent/CN211397473U/en active Active
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Effective date of registration: 20231026 Address after: 450000 Henan Zhengzhou economic and technological development zone passes through eight North two North Road and four port linkage West Avenue. Patentee after: SAFEKEY Engineering Technology(Zhengzhou), Ltd. Address before: 450000 Henan Zhengzhou economic and technological development zone passes through eight North two North Road and four port linkage West Avenue. Patentee before: SAFEKEY Engineering Technology(Zhengzhou), Ltd. Patentee before: Zhengzhou Weilin Engineering Technology Co.,Ltd. |