CN210347331U - Guardrail horizontal load resistance on-site detection device - Google Patents
Guardrail horizontal load resistance on-site detection device Download PDFInfo
- Publication number
- CN210347331U CN210347331U CN201822259812.4U CN201822259812U CN210347331U CN 210347331 U CN210347331 U CN 210347331U CN 201822259812 U CN201822259812 U CN 201822259812U CN 210347331 U CN210347331 U CN 210347331U
- Authority
- CN
- China
- Prior art keywords
- measuring
- rod
- frame
- guardrail
- adjustable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A guardrail horizontal load resistance field detection device. Comprises a frame, a thrust device, a measuring device and a counterforce device; the thrust device comprises an adjustable base, a loading device, a horizontal thrust rod and an adjustable support rod, the measuring device comprises a measuring frame, a measuring rod and a measuring instrument, the measuring frame comprises a pair of adjustable measuring frames, the measuring rod is fixed on the measuring frame, the measuring instrument is fixed on the measuring rod, the measuring frame is in a shape extending forwards and extending out, and the measuring rod is arranged on the side opposite to the side, under thrust, of the railing; the counterforce device comprises at least one of a telescopic counterforce rod, an anchor type counterforce hook and a counterforce support. The utility model discloses a guardrail water level load on-the-spot detection device, the operation of being convenient for, single can accomplish and carry, equipment, measurement task, and the measurement of guardrail in adaptable various complicated occasions, its measuring method is accurate, simple and convenient, easy operation is swift.
Description
Technical Field
The utility model relates to a measurement field specifically is an anti horizontal load on-the-spot detection device of guardrail.
Background
The guardrail plays a role in separation and guide in use, is an important safety facility on bridges and buildings, and is frequently damaged due to insufficient horizontal load strength, so that the horizontal load strength of the guardrail is forcibly regulated in various countries.
According to the GB50009-2012 building structure load specification and JG/T342-2012 test method requirements of glass and metal guardrails for buildings, when the guardrail for civil building protection, which is composed of the metal guardrail and the metal or glass material guardrail plate, is detected, the general method is that related materials are sent to a detection mechanism by a related party, and then various guardrails are simulated and installed in a laboratory and are detected. In laboratory test, the stand, breast board, railing, hand protector, refute and connect claw spare, support, bolt fastening, installation quality etc. of guardrail can both obtain guaranteeing basically, but can not reflect real on-the-spot measuring condition. The installation condition of the guardrail in site construction is complex, and the guardrail is influenced by factors such as personnel, materials, construction quality and the like, and can be reflected on the installation quality of the guardrail to influence the safety of the guardrail. The detection result of a laboratory usually cannot truly reflect the field installation quality, and meanwhile, the method wastes time, labor and materials, can not ensure the consistency of the materials used by the guardrail and the field materials, and influences the accuracy of the horizontal load resistance data of the guardrail, so the field quality inspection acceptance is regarded as a necessary link in the industry.
Because no special detection device is arranged, a reaction frame, a loading device, a measurement system and the like are set up on the spot according to the actual situation when the on-site quality inspection acceptance is required. However, due to the influence of factors such as different heights, different shapes and different positions of the actual installation places of the handrails, different detection schemes need to be prepared according to the field conditions during detection, special technicians need to make the schemes according to the field conditions during detection, the detection device is built, the measurement is troublesome, the efficiency is low, the operability is poor, and the measurement result is unreliable due to the fact that the detection device is built unreasonably.
Patent CN206648758U discloses a horizontal thrust measuring device, and the structure is fairly simple easily to be installed, but its pressure seat (4) need be fixed with the ground nail, has destruction to ground, can only be used for the measurement in unfinished place, complex operation moreover, and operating personnel professional level requires highly, still is not fit for using widely on a large scale.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an anti horizontal load witnessed inspections device of guardrail solves above-mentioned technical problem for the witnessed inspections of the anti horizontal load of guardrail is simple and easy more and accurate not disturbed.
In order to achieve the purpose, the utility model adopts the following technical proposal: a guardrail horizontal load resistance field detection device comprises a rack, a thrust device, a measuring device and a counterforce device;
the thrust device comprises an adjustable base, a loading device, a horizontal thrust rod and an adjustable support rod, wherein the adjustable base is adjustably and movably connected to the rack, the loading device is fixedly connected to the adjustable base, the horizontal thrust rod is slidably connected to the adjustable base, one end of the horizontal thrust rod is connected with the loading device, the other end of the horizontal thrust rod is connected with the thrust rod, and the adjustable support rod is adjustably and movably connected to the thrust rod;
the loading device is a jack;
the measuring device comprises a measuring frame, a measuring rod and a measuring instrument, wherein the measuring frame comprises a pair of adjustable measuring frames, the measuring rod is fixed on the measuring frame, the measuring instrument is fixed on the measuring rod, the measuring frame is in a shape extending forwards and extending out, and the measuring rod is arranged on the side opposite to the side, pushed by the railing, of the measuring frame;
the counterforce device comprises at least one of a telescopic counterforce rod, an anchor type counterforce hook and a counterforce support; the counterforce device is assembled with the frame.
Preferably, the bottom ends of the measuring frame and the rack are provided with adjustable bottom plates.
Preferably, the horizontal thrust rod is a square steel pipe, an adjustable support rod is arranged on the thrust rod, and a spherical hinge mechanism is arranged at the contact part of the adjustable support rod and the railing.
Preferably, the measuring instrument is a measuring ruler, and the number of the measuring instruments is 5.
Preferably, the telescopic reaction rod, the anchor type reaction hook and the reaction bracket in the reaction device are all provided with telescopic and locking structures.
Preferably, one end of the telescopic counter-force rod is fixedly connected to the rack, the connecting point and the loading device are located on the same horizontal line, and the other end of the telescopic counter-force rod is used for abutting against a fixed object;
the anchor type counter-force hook comprises a hook body and a cable body, wherein the cable body is fixedly connected to the bottom of the rack, and the hook body is used for hooking the lower edge of the beam plate outside the railing;
one end of the counter-force support is pivotally connected to the rack, the other end of the counter-force support is used for supporting the ground, a base is arranged at one end of the counter-force support for supporting the ground, and a pad body used for increasing friction force is arranged on the portion, in contact with the ground, of the base.
Preferably, the guardrail horizontal load resistance field detection device is characterized in that the measuring frame and the rack are of detachable structures.
A use method of a guardrail horizontal load resistance field detection device comprises the following steps:
s1, preparation of work before detection:
s1.1, collecting and recording installation information of guardrails needing to be detected;
s1.2, measuring the length of three upright posts and one handrail of two adjacent breast boards of a guardrail at a part needing to be detected, and if no special required size exists, taking 2 times of 1200mm as the size of a test piece;
s1.3, marking a measuring point A, B, C, D, E on the handrail at the upper end of the guardrail according to the test process B.3.2 of appendix B.3.2 of JG/T342-2012 glass and metal guardrail for building, wherein the measuring point A and the measuring point B are the positions of the application points at the same time;
s1.4, determining a horizontal load value of the top of the guardrail according to GB50009-2012 building structure load specification or design requirements;
s2, mounting a thrust device:
s2.1, connecting the thrust device and the base stably, adjusting the jack bracket to a proper position, and screwing down a fixing screw to ensure the stability of the bracket;
s2.2, installing a thrust rod, wherein the center point of the thrust rod is aligned with a measurement D point at the upper end of the measured guardrail;
s2.3, adjusting the positions of the support rods on the thrust rod points to align the center points of the two support rods with the measurement point A and the measurement point B;
s3 reaction force device mounting
S3.1, connecting an anchor type reaction hook: the grab hook or the fixed anchor rod is hooked on the lower edge of the beam plate outside the railing, the upper surface of the grab hook or the fixed anchor rod is firmly connected with the thrust frame base, the cable body is tightened, and the cable body is locked to form counter force;
s3.2, connecting the support rods: the length of the supporting rod is adjusted to enable the supporting rod to be horizontally and firmly supported on a fixed object, and the supporting rod is locked to form counter force;
s3.3, connecting a reaction bracket: the length of the counter-force bracket is adjusted to firmly support the counter-force bracket on the ground, and the bracket is locked to form counter-force;
s4, mounting a measuring device:
s4.1, stably connecting a dial indicator mounting support with a base and adjusting the height to a proper height, erecting a dial indicator mounting cross rod on the support and firmly mounting, mounting a dial indicator on the cross rod and adjusting the position to A, B, C, D, E points at the center of a detection point rail at the upper end of the rail, and firmly mounting the dial indicator without shaking;
s5, horizontal load resistance test:
s5.1, checking, measuring and recording the installation mode, the installation height and the length of the guardrail among the three stand columns of the tested guardrail;
s5.2, checking whether the installed thrust device and the installed measuring device are normal or not, and if so, timely eliminating the abnormal situation;
s5.3, applying about 1/4 load value as preload, checking the states of the thrust device and the measuring device, checking the states to be normal, unloading after 1min, and collecting dial indicator data in the states by using the states as a reference through a collection system;
s5.4, continuously applying the load to the load value, collecting the data of the dial indicator in the state after 5min of action, then unloading, collecting and storing the data of the dial indicator in the unloaded state;
s5.5, calculating the horizontal displacement value, the maximum disturbance degree and the maximum residual disturbance degree after unloading of the guardrail according to the requirements of JG/T342-.
The utility model discloses for prior art gain following technological effect:
2.1 the utility model discloses a thrust device: including sliding distance rod, frictional resistance when solving the loading improves and detects precision height-adjustable and angle mode, can detect the anti horizontal load test of the stair guardrail of co-altitude and co-angle not.
2.2 the utility model discloses a measuring device: the system comprises a 5-channel data simultaneous acquisition system, automatic resetting, timing and calculation, and a detection report is printed by a computer. The problem of 5 measuring points need artifical the difficulty that resets, read the table simultaneously is solved, improve detection efficiency and detection accuracy effectively, but have the function of height-adjusting and angle, solve the horizontal load of the stair guardrail of co-altitude and different angles.
2.3 the utility model provides a counterforce device adopts couple formula and telescopic method, has solved stair, balcony, the counter-force problem that receives when platform guardrail is experimental effectively.
2.4 the utility model discloses a connecting device adopts parts such as split type, combination formula, adjustable, commonality, has solved transportation, installation, test scheduling problem at special detection device in scene. The use is light and simple, time and labor are saved, and the operability is good.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a schematic view of a spherical hinge structure
FIG. 3 is a schematic view of the reaction force support structure
Wherein, 1-a machine frame, 2-an adjustable measuring frame, 21-an upper frame, 22-a bottom frame, 23-a measuring rod, 24-a measuring instrument, 31-an adjustable base, 32-a jack, 33-a directional lock, 34-a fixed block, 35-a horizontal thrust rod, 36-an adjustable supporting rod, 37-an adjustable supporting sleeve, 38-a thrust rod, 4-an adjustable bottom plate, 41-an adjusting screw, 51-a hook body, 52-a cable body, 61-a telescopic counter-force rod, 62-a counter-force base, 71-a shaft pin, 72-a bracket outer tube, 73-a bracket inner tube, 74-a bracket base, 75-an anti-skid pad, 362-a pressing surface, 363-a pressing ball and 364-a spring base
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
Example 1
The embodiment of fig. 1 is combined to provide a field detection device for horizontal load resistance of a guardrail, which comprises a rack 1, a thrust device, a measuring device and a counterforce device;
the thrust device comprises an adjustable base 31, a loading device, a horizontal thrust rod 35 and an adjustable support rod 36, wherein the adjustable base 31 is adjustably and movably connected to the rack 1, and the loading device is a jack 32; the jack 32 is fixedly connected to the adjustable base 31, the horizontal thrust rod 35 is slidably connected to the adjustable base 31, in the embodiment, the sliding connection is that a fixed block 34 is fixedly arranged on the adjustable base 31, the fixed block 34 is provided with a limit hole, the horizontal thrust rod 35 penetrates through the limit hole and is slidably connected, one end of the horizontal thrust rod 35 is connected with the loading device jack 32, the other end of the horizontal thrust rod is connected with the thrust rod 38, and the adjustable support rod 36 is sleeved on the thrust rod 38 through an adjustable support sleeve 38; the position that adjustable support rod and railing contact is provided with the ball pivot mechanism, the ball pivot mechanism includes clamp plate 362, presses ball 363, spring 364, the ball pivot mechanism can guarantee that pressure transmits with the horizontal direction.
The measuring device comprises a measuring frame, a measuring rod 23 and a measuring instrument 24, wherein the measuring frame comprises a pair of adjustable measuring frames 2, each adjustable measuring frame 2 is of a detachable structure and comprises an upper frame 21 and a bottom frame 22, the measuring rod 23 is detachably assembled on the measuring frame 2, the measuring instrument 24 is detachably assembled on the measuring rod 23, the measuring instrument 24 is a measuring tape, and the number of the measuring tape is 5. The upper frame 21 has a shape extending forwards and protruding, and the measuring rod 23 is arranged on the side opposite to the side of the railing pushed;
the counterforce device comprises at least one of a telescopic counterforce rod, an anchor type counterforce hook and a counterforce support; the counterforce device is assembled with the frame.
The bottom ends of the measuring frame 2 and the frame 1 are both provided with adjustable bottom plates 4.
The counterforce device comprises a telescopic counterforce rod, an anchor type counterforce hook and a counterforce support;
one end of the telescopic reaction rod 61 is fixedly connected to the frame 1, and the other end is provided with a reaction base 62;
the anchor type reaction force hook comprises a hook body 51 and a cable body 52, the cable body 52 is fixedly connected to the bottom of the rack 1, the cable body 52 and the rack 1 are provided with locking devices, and the hook body 51 is used for hooking the lower edge of a beam plate on the outer side of a railing;
the reaction support comprises a support outer tube 72, a support inner tube 73 and a support base 74, wherein the lower surface of the support base 74 is provided with an anti-slip pad 75 made of rubber particles, one end of the support outer tube 72 is pivotally connected to the rack 1 through a shaft pin 71, the other end of the support outer tube is sleeved with the support inner tube 73 and is provided with a locking structure, the reaction support is provided with two symmetrical tubes, and the vertical projection of the reaction support can be arranged to form a certain angle with the plane where the rack is located, so that the support is supported on the ground and the stability of the support is improved.
The operation mode is as follows:
a use method of a guardrail horizontal load resistance field detection device comprises the following steps:
s1, preparation of work before detection:
s1.1, collecting and recording installation information of guardrails needing to be detected;
s1.2, measuring the length of three upright posts and one handrail of two adjacent breast boards of a guardrail at a part needing to be detected, and if no special required size exists, taking 2 times of 1200mm as the size of a test piece;
s1.3, marking a measuring point A, B, C, D, E on the handrail at the upper end of the guardrail according to the test process B.3.2 of appendix B.3.2 of JG/T342-2012 glass and metal guardrail for building, wherein the measuring point A and the measuring point B are the positions of the application points at the same time;
s1.4, determining a horizontal load value of the top of the guardrail according to GB50009-2012 building structure load specification or design requirements;
s2, mounting a thrust device:
s2.1, connecting a jack 32 of the thrust device and an adjustable base 31 firmly, putting the adjustable base 31 to a proper position, and screwing a fixing screw to ensure the stability;
s2.2, installing the horizontal thrust rod 35, and aligning the central point of the horizontal thrust rod 35 with the measuring point D at the upper end of the measured guardrail;
s2.3, adjusting the position of the adjustable support rod 36 on the thrust rod 38 to enable the central point of the adjustable support rod 36 to be aligned with the measurement point A and the measurement point B respectively;
s3 reaction force device mounting
S3.1, connecting an anchor type reaction hook: when the installation occasion of the handrail is wider and can not find a fixed object, the handrail is connected by adopting an anchor type counter-force hook; hooking the hook body 51 on the lower edge of the outer beam plate of the rail, firmly connecting the cable body 52 with the rack 1, tightening the cable body 52, and locking the cable body 52 to form a counter force;
s3.2, connecting the support rods: when the installation occasions of the handrail are narrow, such as corridors, balconies and other occasions, the handrail is connected by adopting the supporting rod; the length of the telescopic reaction rod 61 is adjusted, so that the reaction base 62 is horizontally and firmly supported on a wall body and other fixed objects, and the telescopic reaction rod 61 is locked to form reaction force;
s3.3, connecting a reaction bracket: when the installation occasions of the handrails are high-grade, such as the ground glass curtain wall protection handrails, the dance floor handrails and other occasions, the counter force support can be adopted for connection, the length of the counter force support is adjusted, the counter force support base 74 is firmly supported on the ground, the support is locked to form counter force, and weights such as sandbags, water horses and the like are used for pressurizing the support base 74 when necessary. (ii) a
S4, mounting a measuring device:
s4.1, firmly connecting the measuring rod 23 with the adjustable measuring frame 2 and adjusting the height to a proper height, installing 5 dial indicators 24 on the measuring rod 23 and aligning with the detecting points A, B, C, D, E at the upper end of the handrail respectively, and firmly installing the dial indicators 24 without shaking;
when the railing is placed in the measurement slant, the height of the adjustable measurement frame 2 can be adjusted, the inclination angle of the measurement rod 23 is consistent with the inclination angle of the railing, the thrust rod 38 is rotated simultaneously, the inclination angle of the thrust rod 38 is also consistent with the inclination angle of the railing, and then the direction lock 33 is locked.
S5, horizontal load resistance test:
s5.1, checking, measuring and recording the installation mode, the installation height and the length of the guardrail among the three stand columns of the tested guardrail;
s5.2, checking whether the installed thrust device and the installed measuring device are normal or not, and if so, timely eliminating the abnormal situation;
s5.3, applying about 1/4 load value as preload, checking the states of the thrust device and the measuring device, checking the states to be normal, unloading after 1min, and collecting dial indicator data in the states by using the states as a reference through a collection system;
s5.4, continuously applying the load to the load value, collecting the data of the dial indicator in the state after 5min of action, then unloading, collecting and storing the data of the dial indicator in the unloaded state;
s5.5, calculating the horizontal displacement value, the maximum disturbance degree and the maximum residual disturbance degree after unloading of the guardrail according to the requirements of JG/T342-.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (7)
1. A guardrail horizontal load resistance field detection device is characterized by comprising a rack, a thrust device, a measuring device and a counterforce device;
the thrust device comprises an adjustable base, a loading device, a horizontal thrust rod and an adjustable support rod, wherein the adjustable base is adjustably and movably connected to the rack, the loading device is fixedly connected to the adjustable base, the horizontal thrust rod is slidably connected to the adjustable base, one end of the horizontal thrust rod is connected with the loading device, the other end of the horizontal thrust rod is connected with the thrust rod, and the adjustable support rod is adjustably and movably connected to the thrust rod;
the loading device is a jack;
the measuring device comprises a measuring frame, a measuring rod and a measuring instrument, wherein the measuring frame comprises a pair of adjustable measuring frames, the measuring rod is fixed on the measuring frame, the measuring instrument is fixed on the measuring rod, the measuring frame is in a shape extending forwards and extending out, and the measuring rod is arranged on the side opposite to the side, pushed by the railing, of the measuring frame;
the counterforce device comprises at least one of a telescopic counterforce rod, an anchor type counterforce hook and a counterforce support; the counterforce device is assembled with the frame.
2. The guardrail horizontal load resistance field detection device as claimed in claim 1, wherein the measuring frame and the bottom end of the frame are provided with adjustable bottom plates.
3. The on-site detection device for the horizontal load resistance of the guardrail according to claim 1, wherein the horizontal thrust rod is a square steel pipe, an adjustable support rod is arranged on the thrust rod, and a spherical hinge mechanism is arranged at a contact part of the adjustable support rod and the guardrail.
4. The guardrail horizontal load resistance field detection device as claimed in claim 1, wherein the measuring instrument is a 5-point ruler.
5. The guardrail horizontal load resistance field detection device as claimed in claim 1, wherein the telescopic reaction rod, the anchor type reaction hook and the reaction bracket in the reaction device are all provided with telescopic and locking structures.
6. The guardrail horizontal load resistance on-site detection device as claimed in claim 5, wherein one end of the telescopic reaction rod is fixedly connected to the frame, and the other end of the telescopic reaction rod is used for abutting against a fixture;
the anchor type counter-force hook comprises a hook body and a cable body, wherein the cable body is fixedly connected to the bottom of the rack, and the hook body is used for hooking the lower edge of the beam plate outside the railing;
one end of the counter-force support is pivotally connected to the rack, the other end of the counter-force support is used for supporting the ground, a base is arranged at one end of the counter-force support for supporting the ground, and a pad body used for increasing friction force is arranged on the portion, in contact with the ground, of the base.
7. The guardrail horizontal load resistance field detection device as claimed in claim 1, wherein the measuring frame and the machine frame are both detachable structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259812.4U CN210347331U (en) | 2018-12-30 | 2018-12-30 | Guardrail horizontal load resistance on-site detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259812.4U CN210347331U (en) | 2018-12-30 | 2018-12-30 | Guardrail horizontal load resistance on-site detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210347331U true CN210347331U (en) | 2020-04-17 |
Family
ID=70172947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822259812.4U Active CN210347331U (en) | 2018-12-30 | 2018-12-30 | Guardrail horizontal load resistance on-site detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210347331U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068505A (en) * | 2018-12-30 | 2019-07-30 | 常州华厦建设工程质量检测有限公司 | A kind of anti-horizontal loading on-site detecting device of guardrail and its application method |
| CN111766157A (en) * | 2020-07-31 | 2020-10-13 | 福州大学 | Pull-anchor type railing horizontal thrust detection device and implementation method |
| CN114778306A (en) * | 2022-04-01 | 2022-07-22 | 中大检测(湖南)股份有限公司 | Building railing thrust experiment detection device and detection method thereof |
-
2018
- 2018-12-30 CN CN201822259812.4U patent/CN210347331U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068505A (en) * | 2018-12-30 | 2019-07-30 | 常州华厦建设工程质量检测有限公司 | A kind of anti-horizontal loading on-site detecting device of guardrail and its application method |
| CN111766157A (en) * | 2020-07-31 | 2020-10-13 | 福州大学 | Pull-anchor type railing horizontal thrust detection device and implementation method |
| CN111766157B (en) * | 2020-07-31 | 2024-06-11 | 福州大学 | Pull anchor type railing horizontal thrust detection device and implementation method |
| CN114778306A (en) * | 2022-04-01 | 2022-07-22 | 中大检测(湖南)股份有限公司 | Building railing thrust experiment detection device and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210347331U (en) | Guardrail horizontal load resistance on-site detection device | |
| CN110068505A (en) | A kind of anti-horizontal loading on-site detecting device of guardrail and its application method | |
| AU2012203425B2 (en) | A device for measuring straightness and squareness of walls, floor and ceiling of building structures and the like | |
| US7392593B2 (en) | Angle meter and spirit level | |
| CN109539943A (en) | A kind of concrete structure crack width detecting and method | |
| CN112539737A (en) | Flatness measuring device for paving floor tiles in constructional engineering and implementation method | |
| CN107036522B (en) | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge | |
| CN214372431U (en) | Building wall inclination detection device | |
| CN213335939U (en) | Detection apparatus for bridge beam supports | |
| CN201724810U (en) | Detecting device | |
| CN110108458B (en) | Railing handrail safety detector and detection method | |
| CN210625557U (en) | Wall body straightness detection device that hangs down | |
| CN215219158U (en) | Equipment for detecting railway construction clearance | |
| CN213874288U (en) | Verticality or right angle precision measuring instrument | |
| CN210513104U (en) | Formwork system monitoring device | |
| US20080276715A1 (en) | Handrail testing device | |
| CN106767223B (en) | A kind of double fixed outside micrometer monitor stations | |
| CN210487972U (en) | Hand-held laser rangefinder calibrating installation | |
| CN205719806U (en) | Scaffold adjustable bracket and adjustable base compressive strength test device | |
| CN218646170U (en) | Swift measuring device of job site cambered surface | |
| CN216448861U (en) | Building engineering quality detection equipment | |
| CN111044015A (en) | Circular steel column gradient measuring device | |
| CN110953446A (en) | Swinger support and measuring method | |
| CN216348271U (en) | A concrete thickness short-term test device for energy-conserving building engineering | |
| CN215447893U (en) | Gradient measuring mechanism for constructional engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |