CN111906468A - Rivet welding positioning device for pick box of tunneling and anchoring machine - Google Patents
Rivet welding positioning device for pick box of tunneling and anchoring machine Download PDFInfo
- Publication number
- CN111906468A CN111906468A CN202010910419.6A CN202010910419A CN111906468A CN 111906468 A CN111906468 A CN 111906468A CN 202010910419 A CN202010910419 A CN 202010910419A CN 111906468 A CN111906468 A CN 111906468A
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- indexing rotary
- positioning
- rotary disc
- guide rail
- pick box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
Abstract
The invention provides a riveting and welding positioning device for a pick box of an excavating and bolting machine, which comprises a working platform, a supporting upright post, a first indexing rotary disc, a second indexing rotary disc, a third indexing rotary disc and a pick box positioning device, wherein the working platform is provided with a first positioning hole and a second positioning hole; the rotation of power source motors of the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk is controlled to determine the inclination angle beta, the deflection angle alpha and the distribution angle theta of a positioning tooth seat positioning shaft and a cutting tooth seat, so that the automatic positioning of the position and the direction of the cutting tooth seat relative to the cutting head body is realized; in addition, the first indexing rotary disc and the second indexing rotary disc are arranged together, so that the transverse length of the device is shortened, the structural rigidity is increased, the influence of motor vibration on the tooth seat positioning device and the pick seat on the second indexing rotary disc is reduced, and the positioning precision and the stability of the whole device are improved.
Description
Technical Field
The invention relates to the technical field of tunneling devices, in particular to a rivet welding positioning device for a pick box of an anchor tunneling machine.
Background
The cutting teeth of the excavator are main parts for cutting rocks, and are distributed in a spiral line, so that the cutting tooth seat and the cutting teeth are correspondingly distributed on the cutting head body in a spiral line, the positioning precision of the tooth seat directly determines the working performance of the cutting head body, the excavating efficiency of the excavator is influenced, and the positioning mode aiming at the positioning of the cutting tooth seat at present is as follows: the cutter head is placed on the base, the position of the pick holder is determined by scribing the lines on the base, arranging positioning holes and the like, manual errors exist, the precision is poor, the cutter head needs to be arranged and disassembled every time, and the working efficiency is reduced. In addition, chinese patent 201811275308.1 discloses an automatic positioning device for cutting teeth and a full-automatic positioning welding method thereof, in the patent scheme, the rotation angle of the output shafts of five electric motors is controlled by a computer, the posture of the positioning cutting teeth in space is determined, and then a tooth holder is welded and fixed on a cutting head body through the positioning cutting teeth; however, the connecting part of the device in the horizontal direction is too long, so that the rigidity of the device is poor, the horizontal guide rod, the pick holder and the positioning pick are connected together through the output shaft of the motor, the motor vibrates in the working process, and the connecting part of the device in the horizontal direction is too long, so that the parts vibrate greatly and the positioning precision is high. Therefore, a need exists in the industry for a rivet welding positioning device for a pick box of an excavating and anchoring machine.
Disclosure of Invention
The invention aims to provide a rivet welding positioning device for a pick box of an excavating and bolting machine, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides a riveting and welding positioning device for a pick box of an excavator, which comprises a working platform, wherein a first guide rail is arranged on the working platform, a supporting upright post is connected onto the first guide rail in a sliding manner, a second guide rail is arranged on the supporting upright post, a lifting platform is connected onto the second guide rail in a sliding manner, a first indexing rotary disc is arranged on the lifting platform, a second indexing rotary disc is arranged on the first indexing rotary disc, a pick box positioning device is arranged on the second indexing rotary disc, and the pick box positioning device is used for positioning and mounting the pick box; the working platform is provided with a cutting head body positioning device, the cutting head body positioning device comprises a third indexing rotary disc, and the rotation directions of the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are not coincident; the third indexing rotary disc is provided with a plurality of mounting grooves uniformly distributed along the circumferential direction, a linkage screw rod and a positioning block are arranged in the mounting grooves, the positioning block is connected to the mounting grooves in a sliding mode, a screw rod nut is sleeved on the linkage screw rod and connected with the positioning block, the positioning block is controlled to slide in the mounting grooves in a rotating mode through the linkage screw rod, and mounting and positioning of the cutting head bodies of different sizes on the third indexing rotary disc are achieved.
Furthermore, the rotation directions of the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are mutually perpendicular in pairs.
Furthermore, the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are provided with scale marks along the circumferential direction for marking the rotation angle.
Furthermore, the pick box positioning device comprises a pick box positioning seat and a pick box positioning shaft; the tooth seat positioning seat is installed in the second graduation gyration dish, and tooth seat location axle is installed in the tooth seat positioning seat, and tooth seat location axle is used for the location installation of pick seat.
Furthermore, a first driving device is arranged between the supporting upright post and the first guide rail, and the first driving device drives the supporting upright post to slide along the first guide rail and drives the supporting upright post to be close to or far away from the third indexing rotary disc; and a second driving device is arranged between the lifting platform and the second guide rail, the second driving device drives the lifting platform to slide along the second guide rail, and the lifting platform is driven to be close to or far away from the third indexing rotary disc.
Further, the first driving device comprises a first motor and a first ball screw mechanism, the first ball screw is arranged along the direction of the first guide rail, the first ball screw is positioned in the first guide rail, a first screw nut is sleeved on the first ball screw and connected with a support upright post arranged on the first guide rail, the end part of the first ball screw is connected with the first motor, and the first motor drives the first ball screw mechanism to drive the support upright post to slide on the first guide rail; the second driving device comprises a second motor and a second ball screw mechanism, the second ball screw is arranged along the direction of the second guide rail, the second ball screw is positioned in the second guide rail, a second screw nut is sleeved on the second ball screw and connected with a lifting platform arranged on the second guide rail, the end part of the second ball screw is connected with the second motor, and the second motor drives the second ball screw mechanism to drive the lifting platform to slide on the second guide rail.
Furthermore, a linkage screw rod in the mounting groove of the third indexing rotary disc is connected with a first power device, and the first power device drives the linkage screw rod to rotate so as to drive a screw rod nut and a positioning block on the linkage screw rod to slide in the mounting groove.
Furthermore, the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are connected with second power devices, and the second power devices are used for driving the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc to rotate.
Furthermore, the first power device and the second power device both comprise a motor and a gear transmission mechanism, and the motor of the first power device is connected with the linkage screw rod through the gear transmission mechanism; the motor of the second power device is connected with the indexing rotary disc through a gear transmission mechanism.
Further, the device comprises a control system operation platform, the control system operation platform is arranged on the working platform, the first driving device, the second driving device, the first power device and the second power device are electrically connected with the control system operation platform, and the control system operation platform is used for controlling the driving of the first driving device, the second driving device, the first power device and the second power device.
The invention has the following beneficial effects:
the invention provides a riveting and welding positioning device for a pick box of an excavating and bolting machine, which comprises a working platform, a supporting upright post, a first indexing rotary disc, a second indexing rotary disc, a third indexing rotary disc and a pick box positioning device, wherein the working platform is provided with a first positioning hole and a second positioning hole; the rotation of power source motors of the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk is controlled to determine the inclination angle beta, the deflection angle alpha and the distribution angle theta of a positioning tooth seat positioning shaft and a cutting tooth seat, so that the automatic positioning of the position and the direction of the cutting tooth seat relative to the cutting head body is realized; in addition, the first indexing rotary disc and the second indexing rotary disc are arranged together, so that the transverse length of the device is shortened, the structural rigidity is increased, the influence of motor vibration on the tooth seat positioning device and the pick seat on the second indexing rotary disc is reduced, and the positioning precision and the stability of the whole device are improved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a rivet welding positioning device for a pick box of an excavator;
FIG. 2 is an isometric view of a rivet welding positioning device of the pick box of the excavator anchor machine of FIG. 1;
FIG. 3 is a schematic view of the pick box positioning apparatus of FIG. 1;
the device comprises a working platform, a third indexing rotary disc, a pick box positioning device, a 31, a pick box positioning seat, a 32, a pick box positioning shaft, a 4, a supporting upright post, a 5, a second indexing rotary disc, a 6, a first indexing rotary disc, a 7, a lifting platform, an 8, a mounting seat, a 9, a control system operation platform, a 10, a first guide rail, a 11, a first motor, a 12, a second guide rail, a 13, a second motor, a 14, a first ball screw mechanism, a 15, a second ball screw mechanism, a 16 and a positioning block.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1 to 3, the rivet welding positioning device for the pick box of the tunneling and anchoring machine comprises a working platform 1, wherein a first guide rail 10 is arranged on the working platform, a bottom plate is connected on the first guide rail in a sliding manner, a supporting upright post 4 is arranged on the bottom plate, a second guide rail 12 is arranged on the supporting upright post, a lifting platform 7 is connected on the second guide rail in a sliding manner, a first indexing rotary disc 6 is arranged on the lifting platform 7, a mounting seat 8 is arranged on the first indexing rotary disc, a second indexing rotary disc 5 is arranged on the mounting seat, a pick box positioning device 3 is arranged on the second indexing rotary disc 5, and the pick box positioning device comprises a pick box positioning seat 31 and a pick box positioning shaft 32; the tooth seat positioning seat is arranged on the second indexing rotary disc, the tooth seat positioning shaft is arranged on the tooth seat positioning seat and used for positioning and mounting the pick seat, the working platform is provided with a cutting head body positioning device, the cutting head body positioning device comprises a third indexing rotary disc 2, a plurality of mounting grooves are uniformly distributed on the third indexing rotary disc along the circumferential direction, and the mounting grooves face the circle center of the third indexing rotary disc; the linkage screw rod and the positioning block 16 are arranged in the mounting groove, the positioning block is connected to the mounting groove in a sliding mode, the linkage screw rod is sleeved with the screw rod nut, the screw rod nut is connected with the positioning block, the linkage screw rod rotates to control the positioning block to slide in the mounting groove, and mounting and positioning of the cutting head bodies with different sizes on the third indexing rotary disc are achieved.
In this embodiment the two liang mutually perpendicular of direction of rotation of first graduation gyration dish, second graduation gyration dish and third graduation gyration dish, first graduation gyration dish, second graduation gyration dish and third graduation gyration dish all are equipped with the scale mark along the circumferencial direction for mark turned angle.
A first driving device is arranged between the supporting upright post and the first guide rail and drives the supporting upright post to slide along the first guide rail; the first driving device comprises a first motor 11 and a first ball screw mechanism 14, a first ball screw is arranged along the direction of a first guide rail, the first ball screw is positioned in the first guide rail, a first screw nut is sleeved on the first ball screw and is connected with a supporting upright post arranged on the first guide rail, the end part of the first ball screw is connected with the first motor, the first motor drives the first ball screw mechanism to drive the supporting upright post to slide on the first guide rail, and the supporting upright post is close to or far away from a cutting head body arranged on a third indexing rotary disc; a second driving device is arranged between the lifting platform and the second guide rail and drives the lifting platform to slide along the second guide rail; the second driving device comprises a second motor 13 and a second ball screw mechanism 15, the second ball screw is arranged along the direction of the second guide rail, the second ball screw is positioned in the second guide rail, a second screw nut is sleeved on the second ball screw and is connected with a lifting platform arranged on the second guide rail, the end part of the second ball screw is connected with the second motor, the second motor drives the second ball screw mechanism to drive the lifting platform to slide on the second guide rail, and the lifting platform is close to or far away from the third indexing rotary disc; and then the pick holder positioning device arranged on the second indexing rotary disk in the lifting platform is close to or far away from the cutting head body arranged on the third indexing rotary disk.
A linkage screw rod in the mounting groove of the third indexing rotary disc is connected with a first power device, the first power device comprises a motor and a gear transmission mechanism, and the motor of the first power device is connected with the linkage screw rod through the gear transmission mechanism; the first power device drives the linkage screw rod to rotate, and drives the screw rod nut and the positioning block on the linkage screw rod to slide in the mounting groove.
The first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are all connected with a second power device, the second power device comprises a motor and a gear transmission mechanism, the gear transmission mechanism comprises a driving gear and a driven gear, an output shaft of the motor of each second power device is connected with the driving gear, the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are all connected with the driven gears, and the driving gears and the driven gears are meshed with each other; the motor of each second power device realizes the rotation of each indexing rotary disc through the matching transmission of the driving gear and the driven gear; the first indexing rotary disc rotates to adjust and change the inclination angle beta of the pick holder on the tooth holder positioning shaft; the second indexing rotary disc rotates to adjust and change the deflection angle alpha of the pick box on the pick box positioning shaft; the pick box positioning device is a universal tool, the angles of the pick box positioning seat and the pick box positioning shaft are adjusted, and the cutting angle gamma of the pick box can be determined according to the inclination angle beta and the deflection angle alpha of the pick box; the third indexing rotary disc rotates to drive the cutting head body to rotate together, and the distribution angle theta of the cutting head body relative to the pick holder is adjusted and changed; and determining the space postures of the positioning pick holder and the picks according to the inclination angle beta of the pick holder, the deflection angle alpha of the pick holder and the distribution angle theta.
The device comprises a control system operating platform 9, wherein the control system operating platform is a computer numerical control system platform, the computer numerical control system platform is arranged on a bottom plate on a first guide rail, and the computer numerical control system platform is electrically connected with motors of a first driving device, a second driving device, a first power device and a second power device to control the rotation of the motors.
The operation process comprises the following steps:
hoisting the cutter head body on a third indexing rotary disc, and mounting the pick box on a pick box positioning shaft of a pick box positioning device; the computer numerical control system platform respectively controls the rotation of motors of the first driving device, the second driving device, the first power device and the second power device according to the set position data; after corresponding parameters are input into a computer numerical control system platform, a motor of a first power device drives a linkage screw rod to realize that a positioning block slides and clamps a cutting head body, and a first motor drives a support upright post to slide back and forth along a first guide rail so as to be suitable for welding of pick seats of cutting head bodies with different diameters; the second motor drives the lifting platform to slide up and down along the second guide rail so as to be suitable for welding the pick holders at different height positions of the cutting head body, and meanwhile, the first indexing rotary disc rotates according to an input inclination angle beta and the second indexing rotary disc rotates according to an input deflection angle alpha; and the third indexing rotary disk positions the welding position and the welding angle of the pick holder and the pick relative to the cutting head body according to the input distribution angle theta, and rivets the pick holder on the cutting head body. After all the pick holders are riveted on the cutter head body, a motor of the first power device rotates to drive the positioning block to loosen the cutter head body on the third indexing rotary disk; and (5) hoisting and replacing the next cutting head body, and repeating the process to complete the riveting of the pick seats of the cutting head bodies with different diameters.
The invention provides a riveting and welding positioning device for a pick box of an anchor driving machine, wherein power sources are provided by motors, so that the operation is reliable and the cost is low; the rotation of power source motors of the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk is controlled by a computer numerical control system platform, the inclination angle beta, the deflection angle alpha and the distribution angle theta of a positioning tooth seat positioning shaft and a cutting tooth seat are determined, and the automatic positioning of the position and the direction of the cutting tooth seat relative to the cutting head body is realized; and the first indexing rotary disc and the second indexing rotary disc are arranged together, so that the transverse length of the device is shortened, the structural rigidity is increased, the influence of motor vibration on the toothholder positioning device and the pick holder on the second indexing rotary disc is reduced, and the positioning precision and the stability of the whole device are improved. In addition, the cutting head body is simple and convenient to disassemble and assemble, only the motor of the first power device needs to be controlled to rotate, and the positioning blocks on the third indexing rotary disk are loosened, so that the cutting head body is suitable for positioning and clamping the cutting head bodies with different sizes.
It should be noted that, the computer numerical control system platform is the prior art, and can control the operation of the motor through the numerical control programming program.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rivet welding positioning device for a pick box of an excavator is characterized by comprising a working platform, wherein a first guide rail is arranged on the working platform, a supporting upright post is connected onto the first guide rail in a sliding manner, a second guide rail is arranged on the supporting upright post, a lifting platform is connected onto the second guide rail in a sliding manner, a first indexing rotary disc is arranged on the lifting platform, a second indexing rotary disc is arranged on the first indexing rotary disc, a pick box positioning device is arranged on the second indexing rotary disc, and the pick box positioning device is used for positioning and mounting the pick box; the working platform is provided with a cutting head body positioning device, the cutting head body positioning device comprises a third indexing rotary disc, and the rotation directions of the first indexing rotary disc, the second indexing rotary disc and the third indexing rotary disc are not coincident; the third indexing rotary disc is provided with a plurality of mounting grooves uniformly distributed along the circumferential direction, a linkage screw rod and a positioning block are arranged in the mounting grooves, the positioning block is connected to the mounting grooves in a sliding mode, a screw rod nut is sleeved on the linkage screw rod and connected with the positioning block, the positioning block is controlled to slide in the mounting grooves in a rotating mode through the linkage screw rod, and mounting and positioning of the cutting head bodies of different sizes on the third indexing rotary disc are achieved.
2. The rivet welding positioning device for the pick box of the driving and anchoring machine as claimed in claim 1, wherein the rotation directions of the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk are mutually perpendicular in pairs.
3. The rivet welding positioning device for the pick box of the driving and anchoring machine as claimed in claim 2, wherein the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk are provided with graduation marks along the circumferential direction for indicating the rotation angle.
4. The anchor driving machine pick box rivet welding positioning device as claimed in claim 2, wherein the pick box positioning device comprises a pick box positioning seat and a pick box positioning shaft; the tooth seat positioning seat is installed in the second graduation gyration dish, and tooth seat location axle is installed in the tooth seat positioning seat, and tooth seat location axle is used for the location installation of pick seat.
5. The rivet welding positioning device for the pick box of the tunneling and anchoring machine as claimed in claim 4, wherein a first driving device is provided between the supporting column and the first guide rail, the first driving device drives the supporting column to slide along the first guide rail and drives the supporting column to move closer to or away from the third indexing rotary disc; and a second driving device is arranged between the lifting platform and the second guide rail, the second driving device drives the lifting platform to slide along the second guide rail, and the lifting platform is driven to be close to or far away from the third indexing rotary disc.
6. The rivet welding and positioning device for the pick box of an excavator or anchor driver as claimed in claim 5, wherein the first driving device comprises a first motor and a first ball screw mechanism, the first ball screw is arranged along the first guide rail, the first ball screw is arranged in the first guide rail, a first screw nut is sleeved on the first ball screw, the first screw nut is connected with a supporting column arranged on the first guide rail, the end part of the first ball screw is connected with the first motor, and the first motor drives the first ball screw mechanism to drive the supporting column to slide on the first guide rail;
the second driving device comprises a second motor and a second ball screw mechanism, the second ball screw is arranged along the direction of the second guide rail, the second ball screw is positioned in the second guide rail, a second screw nut is sleeved on the second ball screw and connected with a lifting platform arranged on the second guide rail, the end part of the second ball screw is connected with the second motor, and the second motor drives the second ball screw mechanism to drive the lifting platform to slide on the second guide rail.
7. A driving and anchoring machine pick box rivet welding positioning device according to any one of claims 1-6, characterized in that a first power device is connected to the linkage screw rod in the mounting groove of the third indexing rotary disc, and the first power device drives the linkage screw rod to rotate, so that a screw nut and a positioning block on the linkage screw rod are driven to slide in the mounting groove.
8. The rivet welding positioning device for the pick box of the tunneling and anchoring machine as claimed in claim 7, wherein a second power device is connected to each of the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk, and the second power device is used for driving the first indexing rotary disk, the second indexing rotary disk and the third indexing rotary disk to rotate.
9. The anchor driving machine pick box rivet welding positioning device as claimed in claim 8, wherein the first power device and the second power device each comprise a motor and a gear transmission mechanism, the motor of the first power device is connected with the linkage screw rod through the gear transmission mechanism; the motor of the second power device is connected with the indexing rotary disc through a gear transmission mechanism.
10. The rivet welding positioning device for the pick box of the driving and anchoring machine as claimed in claim 9, comprising a control system operating platform, wherein the control system operating platform is disposed on the working platform, the first driving device, the second driving device, the first power device and the second power device are electrically connected to the control system operating platform, and the control system operating platform is used for controlling the driving of the first driving device, the second driving device, the first power device and the second power device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910419.6A CN111906468A (en) | 2020-09-02 | 2020-09-02 | Rivet welding positioning device for pick box of tunneling and anchoring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910419.6A CN111906468A (en) | 2020-09-02 | 2020-09-02 | Rivet welding positioning device for pick box of tunneling and anchoring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111906468A true CN111906468A (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010910419.6A Pending CN111906468A (en) | 2020-09-02 | 2020-09-02 | Rivet welding positioning device for pick box of tunneling and anchoring machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624105A (en) * | 2021-10-12 | 2021-11-09 | 三一重型装备有限公司 | Pick space angle measuring and positioning device |
| CN114353624A (en) * | 2022-01-13 | 2022-04-15 | 中国铁建重工集团股份有限公司 | Digging anchor machine cutting drum pick seat riveting detection device |
-
2020
- 2020-09-02 CN CN202010910419.6A patent/CN111906468A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624105A (en) * | 2021-10-12 | 2021-11-09 | 三一重型装备有限公司 | Pick space angle measuring and positioning device |
| CN114353624A (en) * | 2022-01-13 | 2022-04-15 | 中国铁建重工集团股份有限公司 | Digging anchor machine cutting drum pick seat riveting detection device |
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