CN209942200U - Anti-falling support for attached lifting scaffold - Google Patents
Anti-falling support for attached lifting scaffold Download PDFInfo
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- CN209942200U CN209942200U CN201920479085.4U CN201920479085U CN209942200U CN 209942200 U CN209942200 U CN 209942200U CN 201920479085 U CN201920479085 U CN 201920479085U CN 209942200 U CN209942200 U CN 209942200U
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- 230000002337 anti-port Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
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- 238000000926 separation method Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 description 5
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Abstract
The utility model provides an inserted lift scaffold frame support of preventing falling is connected with first extension spring that resets between it prevents weighing down piece and the support body, is connected with the second extension spring that resets between pendulum piece and the support body, and the unable automatic re-setting's of whole device condition can not appear, and the security is high, the good reliability. The lower end of the linkage groove of the traction part of the anti-falling block is arranged to be of a closed structure, so that the separation of the inner shifting piece and the anti-falling block in the forward and reverse rotation process of the swing block is avoided, and the safety and the reliability are further enhanced. The first reset tension spring and the second reset spring are connected with tension sensors, so that tension between the support body and the anti-falling block and tension between the support body and the swinging block can be timely sent to a central controller on the ground, and the state of the scaffold can be conveniently monitored. A pressure sensor is arranged on the slide rail or in the chute of the anti-falling block; and a pressure sensor is also arranged on the side wall of the linkage groove, so that engineering personnel can find and handle emergencies such as falling in time, and the safety is high.
Description
Technical Field
The utility model belongs to the technical field of instrument technique for the construction and specifically relates to an attached lifting scaffold frame support of preventing falling.
Background
The lifting scaffold equipment is a novel scaffold which is rapidly developed in the early period of this century, and has important influence on the progress of construction technology in China.
The lifting scaffold is an external scaffold which is erected at a certain height, attached to an engineering structure, can climb or descend along with the engineering structure layer by depending on self lifting equipment and devices, and is provided with an anti-overturning and anti-falling device, wherein the anti-falling device is an important safety accessory on the lifting scaffold, and can restrain a scaffold when the scaffold abnormally falls, so that the aim of avoiding accidents is fulfilled.
Chinese patent 201811265537.5 discloses a detachable triggering anti-falling wall attachment device. Its lower extreme that prevents weighing down the piece is equipped with two traction plates, is equipped with a vertical P type groove on two traction plates respectively, and its balance staff includes the first swing arm and the second swing arm of L type, and the both sides of the free end of first swing arm are equipped with the guiding axle, and the guiding axle is located P type inslot, because its P type groove lower extreme opening, the balance staff triggers or resets the in-process, if the guide rail rises or descends too fast, its guiding axle still has the possibility of deviating from in the P type groove, and the security is not high enough. In addition, in the scheme, an elastic piece for resetting is not connected between the anti-falling block and the anti-falling shell, once the scaffold guide rail has lifting action, the anti-falling block can not automatically extend out again, and therefore optimization is needed to improve safety and convenience.
In addition, chinese patent 201621447534.X discloses an attached falling prevention support for a lifting scaffold, wherein the falling prevention stopper is a T-shaped strip object with a front lower protrusion, an inner groove is formed in a side surface of the falling prevention stopper, a compression spring for resetting is installed in the groove, a triggering swing block of the falling prevention support is an L-shaped member, a long arm of the L-shaped member is in contact with a grid-type cross bar of a guide rail, and a short arm of the L-shaped member is in contact with the front lower protrusion of the falling prevention stopper. In the scheme, the contact of the short arm of the L-shaped component and the front lower protrusion of the anti-falling block is completely open, one side of the short arm, which is far away from the guide rail and the cross bar, is completely open, and if the guide rail rises or falls too fast in the forward and reverse rotation process of the L-shaped component, the short arm of the L-shaped component and the front lower protrusion of the anti-falling block have the possibility of being separated from contact, so that the whole device loses effect, and therefore, the L-shaped component is not safe enough.
In conclusion, the technical problem to be solved urgently by technical personnel in the field is to perform further structural optimization on the conventional falling protector for preventing the scaffold from falling, improve the protection reliability and safety for preventing the scaffold from abnormal falling, and further develop the construction level of China.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inserted lift scaffold frame support of preventing falling to solve the problem that proposes in the background art.
An anti-falling bracket of an attached lifting scaffold, which comprises a bracket body fixed on a wall body and an anti-falling device arranged on the bracket body, the anti-falling device is used for preventing the scaffold from falling down and comprises an anti-falling block and a rotatable swinging block, the anti-falling block can do horizontal linear sliding motion along the direction vertical to the wall body, a first reset tension spring is connected between one side of the anti-falling block facing the wall body and the bracket body, a second reset tension spring is connected between the swinging block and the bracket body, the bottom of the anti-falling block is provided with a traction part which extends downwards, the traction part is provided with an L-shaped linkage groove, the linkage groove comprises a horizontal part and a vertical part, the lower end of the vertical part of the linkage groove is closed, the upper end of the vertical part of the linkage groove is communicated with the horizontal part of the linkage groove, one end of the horizontal part of the linkage groove is communicated with the vertical part of the linkage groove, and the other end of the horizontal part of the linkage groove is provided with an opening facing the wall body; the pendulum piece includes interior plectrum and outer plectrum, the expansion end of interior plectrum is equipped with rolling parts, and rolling parts is located the linkage groove, the piece that falls is prevented to the direction pulling of being close to the wall body by first extension spring that resets to through linkage groove drive interior plectrum and whole pendulum piece antiport, the expansion end orientation of interior plectrum promptly the direction motion of wall body, the second extension spring that resets makes whole pendulum piece forward rotation to the effort of pendulum piece, under the static state of scaffold guide rail and guide rail horizontal pole, the resultant force of first extension spring and the second extension spring that resets makes the pendulum piece not have the rotation trend, and outer plectrum expansion end extends between two certain guide rail horizontal poles of scaffold.
Further, the support body is including the vertical mainboard that is located wall body one side and the horizontal mainboard that is located vertical mainboard and keeps away from wall body one side and with vertical mainboard vertical fixed connection, the first extension spring that resets and the second extension spring that resets and the hookup location of support body all are located vertical mainboard, horizontal mainboard bottom is provided with spout or slide rail, and is corresponding, prevent weighing down a top and be provided with the slide rail or the spout that matches with it, horizontal mainboard promptly and prevent weighing down to be connected with the spout through the slide rail that matches each other between the piece.
Furthermore, the length of interior plectrum is shorter than the length of outer plectrum, still be equipped with on the vertical mainboard and be used for providing the pendulum piece that gives way the space and move back the shelves hole to the expansion end of interior plectrum or outer plectrum.
Furthermore, a pressure sensor is arranged on the sliding rail or in the sliding chute corresponding to the anti-falling block; a pressure sensor is also arranged on the side wall of the vertical part of the linkage groove close to one side of the scaffold guide rail; the pressure sensors are electrically connected with the ground control machine, so that the measured pressure value is transmitted to the ground control machine.
Further, the scaffold frame support of preventing falling still includes the guider of setting on the support body, guider is used for leading and spacing the rising and the decline of scaffold frame, guider is including connecting the guide rail clamping part that sets up wall body one end and setting up the guide roller on the guide rail clamping part of keeping away from at horizontal mainboard, be provided with the guide rail through-hole that supplies the guide rail to pass on the guide rail clamping part, guide roller sets up in pairs and is close to the wall body at the guide rail and keeps away from this both sides of wall body, and guide roller can roll and provide direction and limiting displacement to the guide rail at the guide rail.
Further, the anti-falling support of the attached lifting scaffold further comprises a guide rail jacking rod arranged on the support body, the lower end of the guide rail jacking rod is connected with the support body, a fork opening with an upward opening is formed in the upper end of the guide rail jacking rod, a cross rod of the scaffold can fall into the fork opening downwards, the fork opening is used for supporting the guide rail cross rod of the scaffold when the scaffold falls down, and the scaffold is further prevented from falling down.
Furthermore, the lower end of the guide rail jacking rod is hinged with the support body, and the inclination angle and the length of the guide rail jacking rod can be adjusted.
Furthermore, a first tension sensor for measuring the tension between the bracket body and the anti-falling block is connected between the bracket body and the anti-falling block; a second tension sensor for measuring the tension between the support body and the swing block is connected between the support body and the swing block; the first tension sensor and the second tension sensor are electrically connected with the ground control machine, so that the measured tension value is transmitted to the ground control machine.
The utility model discloses following beneficial effect has at least:
the utility model provides an inserted lift scaffold frame support of preventing falling is prevented falling and is connected with first extension spring that resets between piece and the support body, is connected with the second extension spring that resets between pendulum piece and the support body, and the unable automatic re-setting's condition can not appear in whole device, can not influence the elevating movement of scaffold frame guide rail and horizontal pole yet, and the security is high, the good reliability. The lower end of the linkage groove of the traction part of the anti-falling block is arranged to be of a closed structure, so that the separation of the inner shifting piece and the anti-falling block in the forward and reverse rotation process of the swing block is avoided, and the safety and the reliability are further enhanced.
The utility model discloses in, first extension spring that resets and second reset spring department all are connected with force transducer, can in time give the central controller on ground with the support body and prevent weighing down the pulling force between the piece and the pulling force between support body and the pendulum piece, are convenient for monitor scaffold state. In addition, in the utility model, a pressure sensor is arranged on the slide rail or in the chute of the anti-falling block; and a pressure sensor is also arranged on the side wall of the linkage groove, so that engineering personnel can find and handle emergencies such as falling in time, and the safety is high.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a side view of an attached lifting scaffold anti-falling bracket according to a preferred embodiment of the present invention (with a pendulum block in an initial position);
FIG. 2 is a first side view of the anti-falling device according to the preferred embodiment of the present invention (the anti-falling block is in a state of sliding away from the wall);
fig. 3 is a side view of the anti-falling device of the preferred embodiment of the present invention (the anti-falling block slides to the limit position in the direction away from the wall).
In the figure: 1-wall body, 2-bracket body, 20-bolt mounting hole, 21-vertical main plate, 22-horizontal main plate, 221-slide rail, 3-anti-falling block, 31-traction part, 32-linkage groove, 33-slide groove, 4-swinging block, 41-inner shifting piece, 42-outer shifting piece, 43-rotating shaft, 51-first reset tension spring, 52-second reset tension spring, 53-first tension sensor, 54-second tension sensor, 61-guide rail, 62-guide rail cross rod, 71-guide rail clamping part, 72-guide roller, 73-guide rail through hole, 8-guide rail top clamping rod and 9-swinging block backing hole.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1-3, an attached lifting scaffold anti-falling support comprises a support body 2 fixed on a wall 1, and a guide device and an anti-falling device arranged on the support body, wherein the guide device is used for guiding and limiting the rising and falling of the scaffold, the anti-falling device is used for preventing the scaffold from falling down, the anti-falling device comprises an anti-falling block 3 and a rotatable swing block 4, the swing block can rotate by taking a rotating shaft 43 arranged on the support body as a center, the anti-falling block can horizontally and linearly slide along the direction vertical to the wall, a first reset tension spring 51 is connected between one side of the anti-falling block facing the wall and the support body, a second reset tension spring 52 is connected between the swing block and the support body, a traction part 31 extending downwards is arranged at the bottom of the anti-falling block, an L-shaped linkage groove 32 is arranged on the traction part, and comprises a horizontal part and a vertical part, the lower end of the vertical part of the linkage groove is closed, the upper end of the vertical part of the linkage groove is communicated with the horizontal part of the linkage groove, one end of the horizontal part of the linkage groove is communicated with the vertical part of the linkage groove, and the other end of the horizontal part of the linkage groove is provided with an opening facing the wall body; the pendulum piece includes shorter interior plectrum 41 and longer outer plectrum 42, the expansion end of interior plectrum is equipped with rolling parts, and rolling parts is located the linkage groove, the piece is prevented weighing down to the direction pulling that is close to the wall body by first extension spring that resets to through the linkage groove drive interior plectrum and whole pendulum piece antiport (shown anticlockwise in figure 1 promptly), the effort of second extension spring that resets to the pendulum piece is for making whole pendulum piece forward rotation (shown clockwise in figure 1 promptly), under the static state of scaffold rail and guide rail horizontal pole, the resultant force of first extension spring and second extension spring that resets makes the pendulum piece have no rotation tendency, and outer plectrum expansion end extends between certain two guide rail horizontal poles 62 of scaffold, and the terminal top surface of outer plectrum just contacts with the bottom at last guide rail horizontal pole.
In this embodiment, the support body is including the vertical mainboard 21 that is located wall body one side and the horizontal mainboard 22 that is located vertical mainboard and keeps away from wall body one side and with the perpendicular fixed connection of vertical mainboard, the first extension spring that resets and the second extension spring that resets all are located vertical mainboard with the hookup location of support body, horizontal mainboard bottom is provided with slide rail 221, and is corresponding, it is provided with the spout 33 that matches with it to prevent weighing down a top, and horizontal mainboard promptly and prevent weighing down to be connected with the spout through the slide rail that matches each other between the piece. In this embodiment, be provided with bolt mounting hole 20 on the vertical mainboard, the support body passes through the bolt fastening who sets up in bolt mounting hole 20 on the wall body. In this embodiment, the vertical main board is further provided with a shift-withdrawing hole 9 for providing a space for the tail end of the inner shifting piece or the outer shifting piece to prevent the vertical main board from interfering with the inner shifting piece or the outer shifting piece.
In this embodiment, a pressure sensor (not shown in the figure) is arranged in the chute corresponding to the anti-falling block; a pressure sensor (not shown in the figure) is also arranged on the side wall of the vertical part of the linkage groove close to one side of the scaffold guide rail; pressure sensor all with ground control machine electric connection to the pressure numerical value that will record sends ground control machine to when the guide rail 61 of scaffold frame and the sudden drop of guide rail horizontal pole 62, two pressure sensor's pressure numerical value can increase suddenly, thereby suggestion engineer has emergency's emergence.
Referring to fig. 1, in this embodiment, the guiding device includes a rail clamping portion 71 connected to one end of the transverse main board far away from the wall and guiding rollers 72 disposed on the rail clamping portion, a rail through hole 73 for the rail to pass through is disposed on the rail clamping portion, the guiding rollers are disposed on two sides of the rail 61 in pairs, and the guiding rollers can roll along the rail and provide guiding and limiting effects for the rail.
Referring to fig. 1, in this embodiment, the fall protection support for attached lifting scaffold further comprises a guide rail supporting rod 8 arranged on the support body, the lower end of the guide rail supporting rod is hinged to the support body, a fork opening with an upward opening is arranged at the upper end of the guide rail supporting rod, a cross rod of the scaffold can fall into the fork opening downwards, and the fork opening is used for supporting a guide rail cross rod 62 of the scaffold when the scaffold falls down, so that the scaffold is further prevented from falling down. In this embodiment, the inclination angle and the length of the rail supporting rod can be adjusted.
In the embodiment, a first tension sensor 53 for measuring the tension between the bracket body and the anti-falling block is connected between the bracket body and the anti-falling block; a second tension sensor 54 for measuring the tension between the support body and the swing block is connected between the support body and the swing block; the first tension sensor and the second tension sensor are electrically connected with the ground control machine, so that the measured tension value is transmitted to the ground control machine.
The utility model discloses an anti-falling principle and process are roughly as follows:
in the initial state, the scaffold guide rail and the guide rail cross rod are static, the swinging block is located at the initial position and does not have a rotation trend (see fig. 1 specifically), the top surface of the tail end of the outer shifting piece just contacts with the bottom of the guide rail cross rod, and at the moment, the sliding tail end of the anti-falling block is located outside the projection of the guide rail and the guide rail cross rod.
When the guide rail and the guide rail cross rod need to move upwards, the guide rail cross rods below sequentially push the outer shifting piece upwards, the swinging block rotates reversely to drive the anti-falling block to slide towards the direction close to the wall body, the guide rail cross rod pushing the outer shifting piece at present moves upwards to be separated from the contact with the outer shifting piece, the swinging block rotates forwards to the initial position, the guide rail cross rod pushing the outer shifting piece downwards starts to move upwards, and the process of reversing firstly and then rotating forwards to reset is repeated.
When the guide rail and the guide rail cross rod suddenly drop (see fig. 2 and fig. 3 in particular), the upper guide rail cross rod pushes the outer shifting piece downwards, the swinging block rotates forwards, the anti-dropping block slides towards the direction far away from the wall body, extends into the projection area of the guide rail and the guide rail cross rod, blocks the dropped guide rail cross rod, and prevents the scaffold from continuing to drop.
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 (8)
1. The anti-falling support for the attached lifting scaffold is characterized by comprising a support body (2) fixed on a wall body (1) and an anti-falling device arranged on the support body, wherein the anti-falling device is used for preventing the scaffold from falling down and comprises an anti-falling block (3) and a rotatable swinging block (4), the anti-falling block can do horizontal linear sliding motion along the direction vertical to the wall body, a first reset tension spring (51) is connected between one side of the anti-falling block facing the wall body and the support body, a second reset tension spring (52) is connected between the swinging block and the support body, a traction part (31) extending downwards is arranged at the bottom of the anti-falling block, an L-shaped linkage groove (32) is arranged on the traction part, the linkage groove comprises a horizontal part and a vertical part, the lower end of the vertical part of the linkage groove is sealed, and the upper end of the linkage groove is communicated with the horizontal part of the, one end of the horizontal part of the linkage groove is communicated with the vertical part of the linkage groove, and the other end of the horizontal part of the linkage groove is provided with an opening facing the wall body; the setting aside piece includes interior plectrum (41) and outer plectrum (42), the expansion end of interior plectrum is equipped with rolling parts, and rolling parts is located the linkage groove, the piece is prevented weighing down to the direction pulling that is close to the wall body by first extension spring that resets to through the linkage groove drive interior plectrum and whole setting aside piece antiport, the expansion end orientation of interior plectrum promptly the direction motion of wall body, the second extension spring that resets is for making whole setting aside piece forward rotation to the effort of setting aside piece, under scaffold guide rail (61) and the static state of guide rail horizontal pole (62), the resultant force of first extension spring and second extension spring that resets makes the setting aside piece do not have the trend of rotating, and the outer plectrum expansion end extends between two certain guide rail horizontal poles of scaffold.
2. The anti-falling support for the attached lifting scaffold as claimed in claim 1, wherein the support body comprises a vertical main plate (21) located on one side of the wall and a horizontal main plate (22) located on one side of the vertical main plate away from the wall and perpendicular to and fixedly connected with the vertical main plate, the connection positions of the first and second reset tension springs and the support body are both located on the vertical main plate, the bottom of the horizontal main plate is provided with a sliding groove or a sliding rail, correspondingly, the top of the anti-falling block is provided with a sliding rail or a sliding groove matched with the anti-falling block, that is, the horizontal main plate and the anti-falling block are connected with the sliding groove through the mutually matched sliding rail and sliding rail.
3. The fall protection bracket for the attached lifting scaffold as claimed in claim 2, wherein the length of the inner pulling piece (41) is shorter than that of the outer pulling piece (42), and the vertical main plate is further provided with a swing block shift hole (9) for providing an abdicating space for the movable end of the inner pulling piece or the outer pulling piece.
4. The anti-falling bracket for the attached lifting scaffold as claimed in claim 2, wherein a pressure sensor is arranged on a sliding rail or in a sliding groove corresponding to the anti-falling block; a pressure sensor is also arranged on the side wall of the vertical part of the linkage groove close to one side of the scaffold guide rail; the pressure sensors are electrically connected with the ground control machine, so that the measured pressure value is transmitted to the ground control machine.
5. The attached type lifting scaffold falling-prevention support as claimed in claim 1, further comprising a guiding device disposed on the support body, wherein the guiding device is used for guiding and limiting the ascending and descending of the scaffold, the guiding device comprises a rail clamping portion (71) connected to one end of the transverse main plate far away from the wall and a guiding roller (72) disposed on the rail clamping portion, a rail through hole (73) for the rail to pass through is disposed on the rail clamping portion, the guiding rollers are disposed in pairs on two sides of the rail (61) close to the wall and far away from the wall, and the guiding roller can roll along the rail and provide guiding and limiting effects for the rail.
6. The support of claim 1, further comprising a rail supporting rod (8) disposed on the support body, wherein the lower end of the rail supporting rod is connected to the support body, and the upper end of the rail supporting rod is provided with a fork opening with an upward opening, so that the cross rod of the scaffold can fall down into the fork opening, and the fork opening is used for supporting the rail cross rod (62) of the scaffold when the scaffold falls down, thereby further preventing the scaffold from falling down.
7. The fall protection bracket for an attached lifting scaffold as claimed in claim 6, wherein the lower end of the rail supporting rod is hinged to the bracket body, and the inclination angle and length of the rail supporting rod can be adjusted.
8. The anti-falling bracket for the attached lifting scaffold as claimed in any one of claims 1 to 7, wherein a first tension sensor (53) for measuring the tension between the bracket body and the anti-falling block is connected between the bracket body and the anti-falling block; a second tension sensor (54) for measuring the tension between the support body and the swing block is connected between the support body and the swing block; the first tension sensor and the second tension sensor are electrically connected with the ground control machine, so that the measured tension value is transmitted to the ground control machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479085.4U CN209942200U (en) | 2019-04-10 | 2019-04-10 | Anti-falling support for attached lifting scaffold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479085.4U CN209942200U (en) | 2019-04-10 | 2019-04-10 | Anti-falling support for attached lifting scaffold |
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| Publication Number | Publication Date |
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| CN209942200U true CN209942200U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920479085.4U Active CN209942200U (en) | 2019-04-10 | 2019-04-10 | Anti-falling support for attached lifting scaffold |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461424A (en) * | 2020-11-09 | 2021-03-09 | 厦门安科科技有限公司 | Climbing frame top support monitoring assembly and monitoring method |
| CN112727060A (en) * | 2020-12-29 | 2021-04-30 | 广州达蒙安防科技有限公司 | Anti-falling device for attached lifting scaffold |
| CN114923618A (en) * | 2022-07-22 | 2022-08-19 | 中建六局华南建设有限公司 | Video measuring system for measuring adhesive force of attached lifting scaffold |
-
2019
- 2019-04-10 CN CN201920479085.4U patent/CN209942200U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461424A (en) * | 2020-11-09 | 2021-03-09 | 厦门安科科技有限公司 | Climbing frame top support monitoring assembly and monitoring method |
| CN112461424B (en) * | 2020-11-09 | 2022-01-04 | 厦门安科科技有限公司 | Climbing frame top support monitoring assembly and monitoring method |
| CN112727060A (en) * | 2020-12-29 | 2021-04-30 | 广州达蒙安防科技有限公司 | Anti-falling device for attached lifting scaffold |
| CN112727060B (en) * | 2020-12-29 | 2021-09-07 | 广州达蒙安防科技有限公司 | Anti-falling device for attached lifting scaffold |
| CN114923618A (en) * | 2022-07-22 | 2022-08-19 | 中建六局华南建设有限公司 | Video measuring system for measuring adhesive force of attached lifting scaffold |
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Effective date of registration: 20200703 Address after: Room 2905, landmark building, Hualing new town, No.208, East Laodong Road, Yuhua District, Changsha City, Hunan Province Co-patentee after: Yao Jialiang Patentee after: Hunan runya Construction Co., Ltd Address before: No.111, building 3, commerce city, Yuelu District, Changsha City, Hunan Province 410205 Patentee before: Yao Jialiang |