CN214427152U - Tension meter for tension test of elastic piece product - Google Patents
Tension meter for tension test of elastic piece product Download PDFInfo
- Publication number
- CN214427152U CN214427152U CN202120531719.3U CN202120531719U CN214427152U CN 214427152 U CN214427152 U CN 214427152U CN 202120531719 U CN202120531719 U CN 202120531719U CN 214427152 U CN214427152 U CN 214427152U
- Authority
- CN
- China
- Prior art keywords
- clamping
- block
- driving
- tension
- rod
- 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
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to the field of tensiometer, in particular to a tensiometer for testing the tensile force of an elastic part product, which comprises a tensiometer, a supporting plate and a driving device, wherein the driving device is used for driving the tensiometer to move along the vertical direction; the clamping assembly comprises clamping blocks, pulling pieces and clamping plates, the clamping plates are arranged in pairs and are respectively connected to the two mounting plates, the clamping plates arranged in pairs are hinged to the clamping blocks at intervals, and the pulling pieces are fixedly arranged between the clamping plates arranged in pairs and are used for pulling one ends of the clamping plates, which are far away from the clamping blocks, to abut against each other; the fixing piece is used for fixing the clamping block in the mounting groove. This application has the effect that improves the application scope of tensiometer.
Description
Technical Field
The application relates to the field of tensiometer, in particular to a tensiometer for testing the tensile force of an elastic piece product.
Background
The tension meter is a small, simple and convenient thrust and tension testing instrument, and has the advantages of high precision, easy operation and convenient carrying. The tension meter can be suitable for electronic appliances. The push-pull load test in the industries of light textile, building hardware, lighters, ignition devices, fire-fighting equipment, pen making, lock making, fishing gear, power machinery, scientific research institutions and the like is a new generation product for replacing a tubular push-pull force meter.
The existing Chinese patent with the publication number of CN210051463U discloses a digital push-pull dynamometer, which comprises a push-pull dynamometer body and a protective shell, wherein the top of the push-pull dynamometer body is fixedly connected with a mounting seat, the top of the mounting seat is movably connected with a hook, the bottom of the push-pull dynamometer body is fixedly connected with a shell, the top of the surface of the shell is fixedly connected with a key group, the surface of the push-pull dynamometer body is fixedly connected with a display screen, the bottom of the shell is fixedly connected with a base, and grooves are formed in two sides of the base.
With respect to the related art in the above, the inventors consider that: the hook of the tension meter can measure the object with the hole capable of being hooked on the surface, and the tension meter is not easily connected with the object for the application range of the tension meter is limited.
SUMMERY OF THE UTILITY MODEL
In order to improve the application range of the tension meter, the application provides the tension meter for the tension test of the elastic piece product.
The application provides a tensiometer for elastic component product tension test adopts following technical scheme:
a tension meter for tension test of elastic parts products comprises a tension meter, a support plate and a driving device, wherein the driving device is installed on the support plate, the driving device is used for driving the tension meter to move along the vertical direction, a group of fixing devices for fixing the elastic parts are arranged on the support plate and the tension meter respectively, the two groups of fixing devices are arranged at intervals and oppositely along the vertical direction, each fixing device comprises a mounting plate, a suspension assembly, a clamping assembly and a fixing member, the two mounting plates are fixedly connected to the tension meter and the support plate respectively, and the suspension assemblies are connected to the mounting plates and used for hooking and fixing the elastic parts; the clamping assembly comprises clamping blocks, pulling pieces and clamping plates, the clamping blocks are connected to the mounting plate, the clamping plates are arranged in pairs, one ends of the clamping plates arranged in pairs are hinged to the clamping blocks at intervals, the pulling pieces are fixedly arranged between the clamping plates arranged in pairs, and the pulling pieces are used for pulling one ends of the clamping plates arranged in pairs, which are far away from the clamping plates, to abut against each other; the fixing piece is used for fixing the clamping block in the mounting groove.
By adopting the technical scheme, when the elastic piece is provided with the hole diameter for hanging, the elastic piece is hooked and fixed through the hanging assembly, so that two ends of the elastic piece are respectively fixed on the two mounting plates; when there is not the aperture that can be used to the hook on the elastic component, fix the grip block in the mounting groove through the mounting, set up the elastic component between two grip blocks, grip block lower extreme butt that sets up in pairs through the pulling piece pulling, play the fixed effect of centre gripping to the elastic component, then through the vertical removal of drive arrangement drive tensiometer along the direction of keeping away from the backup pad, make the tensiometer stretch the elastic component, the elasticity size of the elastic component of numerical value judgement through reading the tensiometer, make different elastic components all can be tested by the tensiometer, improve the application scope of tensiometer.
Optionally, the clamping assembly further comprises a reinforcing rod and reinforcing members, the reinforcing rod is arranged to be a long-strip-shaped threaded rod, the clamping plates are arranged to be elastic plates, the reinforcing rod penetrates through the clamping plates and is connected to the clamping plates in pairs in a sliding mode, the number of the reinforcing members is two, and the two reinforcing members are in threaded connection with the reinforcing rod and are located on two sides of the clamping plates in pairs respectively.
Through adopting above-mentioned technical scheme, rotate the reinforcement on the anchor strut for distance between two reinforcements reduces, and the reinforcement promotes the grip block that sets up in pairs to the direction butt that is close to each other, thereby improves the grip block and to the fixed effect of elastic component centre gripping.
Optionally, the suspension assembly includes a suspension block and a suspension hook, the suspension block is connected to the mounting plate, and the suspension hook is fixedly connected to the suspension block and used for connecting an elastic member to be measured; the fixing piece is used for fixing the suspension block in the mounting groove.
Through adopting above-mentioned technical scheme, when being provided with the aperture that is used for the hook on the elastic component, will hang the piece through the mounting and fix in the mounting groove, then will hang the hook and hang on the elastic component, can fix the elastic component, then remove through the drive tensiometer, test the elastic component.
Optionally, the mounting panel is provided with a long-strip-shaped mounting groove, the cross section of the mounting groove is T-shaped, the suspension block and the clamping block are both arranged into a T-shaped block, and the suspension block and the clamping block are both connected in the mounting groove in a sliding manner.
Through adopting above-mentioned technical scheme, with the hanging piece and the grip block sliding connection of T type in the mounting groove, can make hanging piece and grip block fixed connection on the mounting panel, and then make the elastic component stable be connected with tensiometer and backup pad and tested.
Optionally, the fixing piece is a magnetic sheet, and the suspension block and the clamping block are made of magnetic metal materials.
Through adopting above-mentioned technical scheme, when needs adopt suspension assembly or centre gripping subassembly to test the elastic component, will hang piece or grip block and slide in the mounting groove for suspension block or grip block slide to the position of magnetic sheet, the magnetic action through the magnetic sheet will hang piece or grip block and adsorb to fix in the mounting groove, and then conveniently test the elastic component.
Optionally, the driving device includes a driving screw and a driving block, the driving screw is a vertically arranged elongated rod, the driving screw is rotatably connected to the supporting plate, and the driving block is in threaded connection with the driving screw; the tension meter is fixedly connected to the driving block, and a rotating assembly used for facilitating a user to rotate the driving screw rod is arranged on the driving screw rod.
Through adopting above-mentioned technical scheme, the user rotates drive screw, because drive block threaded connection is on drive screw for the drive block moves along drive screw's length direction on drive screw, thereby drives the tensiometer and removes, makes the elastic component of being tested by tensile test.
Optionally, the rotating assembly comprises a rotating disc and a handheld rod, and the rotating disc is coaxially welded on the driving screw rod; the handheld rod is arranged as a strip-shaped rod and is vertically and fixedly connected with a non-central point on the end face of the rotating disc.
Through adopting above-mentioned technical scheme, the user can rotate drive screw in the backup pad through holding handheld pole and drive the rolling disc and rotate, and then makes the drive block remove on drive screw.
Optionally, the support plate is provided with a limiting rod, the limiting rod is a vertically-arranged long-strip-shaped rod, the limiting rod is fixedly connected to the support plate, and the driving block is connected to the limiting rod in a sliding mode along the vertical direction.
Through adopting above-mentioned technical scheme, the setting of gag lever post for the drive block is difficult for taking place to rotate on drive screw when moving along with drive screw's rotation, has improved the stability of drive block when using.
In summary, the present application includes the following beneficial technical effects:
when the tested elastic piece can be hooked, the two ends of the elastic piece are fixed through the suspension assembly; when the elastic component of being tested can not carry out the hook, through placing the both ends of elastic component respectively between the grip block that sets up in pairs in two sets of fixing device, then through the pulling action of pulling the piece for the grip block that sets up in pairs carries out the centre gripping to the elastic component and fixes, then moves to the direction of keeping away from the backup pad through drive arrangement drive tensiometer, after moving to the settlement distance, judges the elasticity size of elastic component through reading the numerical value on the tensiometer.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Reference numerals: 1. a support plate; 2. a tension meter; 21. a force-receiving member; 3. a drive device; 31. a drive screw; 32. a drive block; 33. a drive aperture; 4. a rotating assembly; 41. rotating the disc; 42. a hand-held wand; 5. a limiting rod; 6. a fixing device; 61. mounting a plate; 62. a suspension assembly; 621. a suspension block; 622. hanging hooks; 63. mounting grooves; 64. a clamping assembly; 641. a clamping block; 642. a clamping plate; 643. a pulling member; 65. a reinforcing rod; 66. a reinforcement; 67. a clamping hole; 68. and a fixing member.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a tensiometer for testing the tensile force of an elastic piece product. Referring to fig. 1, the tension meter for testing the tension of the elastic part product comprises a support plate 1, a tension meter 2 and a driving device 3 for driving the tension meter 2 to move, the driving device 3 is installed on the support plate 1, the tension meter 2 is installed on the driving device 3, and a fixing device 6 for fixing different elastic parts is further arranged on the support plate 1.
Referring to fig. 1, the supporting plate 1 is a horizontally arranged rectangular plate, the driving device 3 includes a driving screw 31 and a driving block 32, the driving screw 31 is a vertically arranged elongated rod, and the lower end of the driving screw 31 is rotatably connected to the supporting plate 1; the driving block 32 is a rectangular block, a driving hole 33 is formed in the driving block 32 in a penetrating mode, threads are formed in the inner wall of the driving hole 33, the driving block 32 is connected to the driving screw 31 through the driving hole 33 in a threaded mode, the tension meter 2 is vertically arranged and welded on the side wall of the driving block 32, and a stress piece 21 used for conducting tension to the tension meter 2 is arranged below the tension meter 2; the number of the fixing devices 6 is two, the two groups of fixing devices 6 are opposite and arranged at intervals along the vertical direction, one group of fixing devices 6 is fixedly connected to the stress piece 21, and the other group of fixing devices 6 is fixedly arranged on the supporting plate 1; the driving screw 31 is provided with a rotation assembly 4 for allowing a user to rotate the driving screw 31 conveniently. The user is through fixing the both ends of the elastic component that will measure respectively on two sets of fixing device 6, then drive screw 31 through rotating assembly 4 and rotate, make the drive block 32 remove along the direction of keeping away from backup pad 1 on drive screw 31, stretch the elastic component that will measure, conduct to tensiometer 2 through the pulling force that atress piece 21 will be surveyed the elastic component, after removing to required height, through reading the numerical value on the tensiometer 2, thereby judge the elasticity of the elastic component that surveys.
Referring to fig. 1, the rotating assembly 4 includes a rotating disc 41 and a hand-held rod 42, the rotating disc 41 is provided in a disc shape, and the rotating disc 41 is coaxially welded on the upper end surface of the driving screw 31; the handheld rod 42 is a vertically arranged long-strip-shaped rod, the lower end of the handheld rod 42 is welded on the end face, deviating from the handheld rod 42, of the rotating disc 41, the handheld rod 42 is located at the non-central point of the rotating disc 41, a user can drive the rotating disc 41 to rotate by rotating the handheld rod 42, the rotating disc 41 rotates to drive the driving screw 31 to rotate, and the driving block 32 moves on the driving screw 31 along the direction close to or far away from the supporting plate 1.
Referring to fig. 1, a limiting rod 5 is arranged on a support plate 1, the limiting rod 5 is a long-strip-shaped rod with a circular cross section, the limiting rod 5 is arranged in a length direction parallel to a driving screw 31, the lower end of the limiting rod 5 is welded on the support plate 1, and a driving block 32 is connected on the limiting rod 5 in a sliding mode. The arrangement of the limiting rod 5 enables the driving block 32 not to rotate along with the driving screw 31 easily when moving on the driving screw 31, and improves the stability of the driving block 32 when in use.
Referring to fig. 1 and 2, the fixing device 6 includes a mounting plate 61, a suspension assembly 62, a clamping assembly 64 and a fixing member 68, the mounting plate 61 is a horizontally disposed rectangular plate, the mounting plate 61 is elongated along the length direction of the vertical driving screw 31, a mounting groove 63 is formed in the mounting plate 61, the stress element 21 is disposed opposite to the opening direction of the mounting groove 63 in the support plate 1, the mounting groove 63 is elongated along the length direction of the mounting plate 61, and the mounting groove 63 is a T-shaped groove; the hanging component 62 comprises a hanging block 621 and a hanging hook 622, the hanging block 621 is connected in the mounting groove 63 in a sliding manner along the length direction of the mounting groove 63, and the hanging block 621 is a T-shaped block; the hanging hook 622 is a hook-shaped structure which is vertically arranged, one end of the hanging hook 622 is welded on the hanging block 621, and the other end of the hanging hook 622 is used for being connected with an elastic piece to be measured; the fixing element 68 is made of magnetic sheet and glued in the mounting groove 63, and the suspension block 621 is made of magnetic metal.
Referring to fig. 1, when a hole for hooking is formed in the elastic member to be measured, the suspension block 621 is slid to the fixing element 68, so that the force-receiving member 21 is aligned with the suspension assembly 62 on the support plate 1 in the vertical direction, and the elastic member is hooked on the suspension hooks 622 of the two sets of fixing devices 6 and drives the tension meter 2 to move upwards, so as to detect the elastic member.
Referring to fig. 1 and 2, the clamping assembly 64 includes a clamping block 641 and two clamping plates 642, the clamping block 641 is also provided with a T-shaped block made of magnetic metal, the clamping block 641 is slidably connected in the mounting groove 63, the clamping plates 642 are elastic plates and are provided with two numbers, one ends of the two clamping plates 642 are both spaced and hinged on the clamping block 641, a pulling element 643 is provided between the two clamping plates 642, in this embodiment, the pulling element 643 is provided as a spring, the spring is horizontally provided and is welded to the two clamping plates 642 at two ends, and the pulling element 643 is used for pulling one ends of the two clamping plates 642 away from the clamping block 641 to abut against each other; wear to be equipped with reinforcing rod 65 in the piece 643, reinforcing rod 65 is the cylindrical stock of level setting, has seted up a centre gripping hole 67 on two grip blocks 642 respectively, and reinforcing rod 65 wears to establish on two grip blocks 642 through two centre gripping holes 67, has seted up screw thread on the reinforcing rod 65, and threaded connection has reinforcement 66 on the reinforcing rod 65, and reinforcement 66 sets up to the nut in this embodiment, and the quantity of reinforcement 66 sets up to two, and two reinforcements 66 set up the both sides at two grip blocks 642 respectively.
Referring to fig. 1 and 2, when the elastic member to be detected has no hole for hooking, the clamping block 641 is slid to the fixing member 68 to align the force receiving member 21 with the clamping block 641 on the support plate 1 in the vertical direction, and then the elastic member is clamped between the two clamping plates 642 on the support plate 1 and between the two clamping plates 642 on the force receiving member 21, and by rotating the two reinforcing members 66, the reinforcing members 66 push the two clamping plates 642 to move in the direction approaching each other, so that the elastic member to be detected is stably clamped, and further, by driving the tension meter 2 to move upward, the elastic member is detected.
The implementation principle of the tension meter for the tension test of the elastic part product in the embodiment of the application is as follows: when the elastic member with the hooked hole needs to be tested, the hanging block 621 is fixed in the mounting groove 63 through the fixing member 68, and then the two ends of the elastic member are respectively hooked on the hanging hooks 622 to fix the elastic member; when an elastic member without a hook hole needs to be tested, the elastic member is placed between the two clamping plates 642, the two reinforcing members 66 are rotated to move in a direction approaching each other, the two clamping plates 642 are pushed to abut against each other by the pulling member 643 and the reinforcing members 66, so that the elastic member is clamped and fixed between the two clamping plates 642, and then the driving block 32 drives the tension meter 2 to move on the driving screw 31 by rotating the driving screw 31, so that the elastic member is subjected to a tensile test.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A tensiometer for elastic product tensile test, includes tensiometer (2), its characterized in that: the tension meter fixing device is characterized by further comprising a supporting plate (1) and a driving device (3), wherein the driving device (3) is installed on the supporting plate (1), the driving device (3) is used for driving the tension meter (2) to move along the vertical direction, a group of fixing devices (6) used for fixing elastic pieces are arranged on the supporting plate (1) and the tension meter (2), the two groups of fixing devices (6) are arranged at intervals and oppositely along the vertical direction, each fixing device (6) comprises a mounting plate (61), a suspension assembly (62), a clamping assembly (64) and a fixing piece (68), the two mounting plates (61) are fixedly connected to the tension meter (2) and the supporting plate (1) respectively, and the suspension assembly (62) is connected to the mounting plates (61) and used for hooking and fixing the elastic pieces; the clamping assembly (64) comprises clamping blocks (641), pulling pieces (643) and clamping plates (642), the clamping blocks (641) are connected to the mounting plate (61), the clamping plates (642) are arranged in pairs, one ends of the clamping plates (642) arranged in pairs are hinged to the clamping blocks (641) at intervals, the pulling pieces (643) are fixedly arranged between the clamping plates (642) arranged in pairs, and the pulling pieces (643) are used for pulling one ends, away from the clamping blocks (641), of the clamping plates (642) arranged in pairs to abut against each other; the fixing piece (68) is used for fixing the clamping block (641) in the mounting groove (63).
2. The tension meter for tension testing of an elastic product of claim 1, wherein: the clamping assembly (64) further comprises a reinforcing rod (65) and reinforcing members (66), the reinforcing rod (65) is arranged to be a long-strip-shaped threaded rod, the clamping plates (642) are arranged to be elastic plates, the reinforcing rod (65) penetrates through and is slidably connected to the clamping plates (642) which are arranged in pairs, the number of the reinforcing members (66) is two, and the two reinforcing members (66) are in threaded connection with the reinforcing rod (65) and are respectively located on two sides of the clamping plates (642) which are arranged in pairs.
3. The tension meter for tension testing of an elastic product of claim 1, wherein: the suspension assembly (62) comprises a suspension block (621) and a suspension hook (622), the suspension block (621) is connected to the mounting plate (61), and the suspension hook (622) is fixedly connected to the suspension block (621) and used for connecting an elastic piece to be measured; the fixing piece (68) is used for fixing the suspension block (621) in the mounting groove (63).
4. The tension meter for tension testing of an elastic product of claim 3, wherein: the mounting plate (61) is provided with a long-strip-shaped mounting groove (63), the section of the mounting groove (63) is T-shaped, the suspension block (621) and the clamping block (641) are both arranged into T-shaped blocks, and the suspension block (621) and the clamping block (641) are both connected in the mounting groove (63) in a sliding mode.
5. The tension meter for tension testing of an elastic product of claim 3, wherein: the fixing piece (68) is set as a magnetic sheet, and the suspension block (621) and the clamping block (641) are made of magnetic metal materials.
6. The tension meter for tension testing of an elastic product of claim 1, wherein: the driving device (3) comprises a driving screw rod (31) and a driving block (32), the driving screw rod (31) is a vertically arranged long-strip-shaped rod, the driving screw rod (31) is rotatably connected to the supporting plate (1), and the driving block (32) is in threaded connection with the driving screw rod (31); the tension meter (2) is fixedly connected to the driving block (32), and the driving screw rod (31) is provided with a rotating assembly (4) which is convenient for a user to rotate the driving screw rod (31).
7. The tension meter for tension testing of an elastic product of claim 6, wherein: the rotating assembly (4) comprises a rotating disc (41) and a handheld rod (42), and the rotating disc (41) is coaxially welded on the driving screw rod (31); the handheld rod (42) is a strip-shaped rod, and the handheld rod (42) is vertically and fixedly connected to a non-central point on the end face of the rotating disc (41).
8. The tension meter for tension testing of an elastic product of claim 6, wherein: be provided with gag lever post (5) on backup pad (1), gag lever post (5) are the rectangular shape pole of vertical setting, and gag lever post (5) fixed connection is on backup pad (1), and drive block (32) are along vertical direction sliding connection on gag lever post (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120531719.3U CN214427152U (en) | 2021-03-13 | 2021-03-13 | Tension meter for tension test of elastic piece product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120531719.3U CN214427152U (en) | 2021-03-13 | 2021-03-13 | Tension meter for tension test of elastic piece product |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214427152U true CN214427152U (en) | 2021-10-19 |
Family
ID=78073721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120531719.3U Active CN214427152U (en) | 2021-03-13 | 2021-03-13 | Tension meter for tension test of elastic piece product |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214427152U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117760861A (en) * | 2024-02-19 | 2024-03-26 | 新安东亿安(天津)高分子科技发展有限公司 | Sealing rubber strip tensile property detection device |
-
2021
- 2021-03-13 CN CN202120531719.3U patent/CN214427152U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117760861A (en) * | 2024-02-19 | 2024-03-26 | 新安东亿安(天津)高分子科技发展有限公司 | Sealing rubber strip tensile property detection device |
CN117760861B (en) * | 2024-02-19 | 2024-06-11 | 新安东亿安(天津)高分子科技发展有限公司 | Sealing rubber strip tensile property detection device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN214427152U (en) | Tension meter for tension test of elastic piece product | |
CN214309872U (en) | Concrete impact tester | |
CN211122365U (en) | Impact testing machine | |
CN211122379U (en) | Concrete resiliometer | |
CN210464275U (en) | Reinforcing bar size detection device | |
CN210834463U (en) | Can unite compression fatigue testing machine to carry out tensile fatigue test's tool equipment | |
CN110514379B (en) | Light steel frame type composite wall structure anti-seismic performance testing device | |
CN210091501U (en) | Demonstration device for demonstrating influence of slopes with different angles on tension | |
CN208076290U (en) | A kind of device applying prestressing force and pull-out test | |
CN211292899U (en) | Portable environment detection device | |
CN210123333U (en) | Elasticity coefficient measuring device for physical experiments | |
CN216525392U (en) | Facing brick intensity inspection device for building supervision | |
CN212410104U (en) | Multi-angle chair back tension detection equipment | |
CN208998762U (en) | A kind of displacement meter positioning device for the experiment of long column bias | |
CN208076309U (en) | A kind of load-measuring device of four-point rotary bending tester | |
CN216209396U (en) | Support is used in voltmeter examination | |
CN219369021U (en) | Push-pull dynamometer calibrating device | |
CN110533997A (en) | Integrated demonstration experimental device for the experiment of physical friction power | |
CN220525573U (en) | Spring striking rod calibration device of concrete resiliometer for building engineering | |
CN221303081U (en) | Continuous recording auxiliary device based on coreless densimeter | |
CN211904594U (en) | Lithium ion battery ball invasion experimental device | |
CN216978663U (en) | Steel structure manufacturing and testing equipment | |
CN210322662U (en) | Non-woven fabric water absorption performance tester | |
CN215727450U (en) | Concrete resiliometer for test | |
CN219137790U (en) | Road surface bearing capacity testing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |