CN212989367U

CN212989367U - Concrete slump rapid determination appearance

Info

Publication number: CN212989367U
Application number: CN202021774315.9U
Authority: CN
Inventors: 郭宏锐; 郭家来; 孟磊; 夏中国; 梁津华; 赵中国; 于洋; 孟春明; 窦拥军; 杨安民; 崔学武; 王德晓
Original assignee: China Railway Jinan Engineering Construction Supervision Co Ltd
Current assignee: China Railway Jinan Engineering Construction Supervision Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-16
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to a concrete slump quick tester, belong to concrete detecting instrument's technical field, it includes the frame, the slump bucket, the tamping unit and the measuring component who is used for measuring the concrete height, the slump bucket is placed in the frame, measuring component fixed connection is in the frame, the tamping unit is located the one side that the ground was kept away from to the slump bucket, and the tamping unit includes many sticks, rotary disk and the first actuating mechanism who is used for driving rotary disk intermittent type pivoted, tamper and rotary disk fixed connection, first actuating mechanism is connected with the rotary disk, first actuating mechanism and rotary disk dustcoat are equipped with the protection casing, rotary disk and protection casing rotate about the center pin of rotary disk and are connected, protection casing fixedly connected with is used for driving the tamping unit along being close to or keeping away from the ground direction and inserts the driving piece of smashing the concrete, driving piece fixed connection is in the frame. This application has the effect that reduces the artifical test error of inserting and smashing and bringing, improves the accuracy of testing result.

Description

Concrete slump rapid determination appearance

Technical Field

The application relates to the field of concrete detecting instruments, in particular to a concrete slump rapid tester.

Background

Concrete slump is a standard used for judging the workability of concrete construction in actual construction, and is easy to cause segregation of mixture if the slump is large, and brings difficulty to construction if the slump is too small.

In the related art, the slump test method is as follows: pouring concrete into a horn-shaped slump bucket with an upper opening of 100mm, a lower opening of 200mm and a height of 300mm for three times, uniformly impacting 25 times along the wall of the bucket from outside to inside by using a tamping hammer after each filling, tamping and leveling. And then pulling up the barrel, wherein the concrete generates a collapse phenomenon due to self weight, and the height of the highest point of the collapsed concrete is subtracted from the barrel height (300mm), namely the collapse degree.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the inserting and tamping are operated manually, the inserting and tamping strength and depth of different people are different, and the inserting and tamping strength and depth of the same person are also different every time, so that the accuracy of the measuring result is influenced.

SUMMERY OF THE UTILITY MODEL

In order to reduce the artifical test error of smashing and bringing of inserting, improve the accuracy of testing result, this application provides a concrete slump rapid measurement appearance.

The application provides a concrete slump rapid determination appearance adopts following technical scheme:

the utility model provides a concrete slump quick tester, includes frame, slump bucket, tamping unit and is used for measuring the measuring component of concrete height, the slump bucket is placed in the frame, measuring component fixed connection is in the frame, tamping unit is located the one side that the slump bucket kept away from ground, and tamping unit includes many tampers, rotary disk and is used for driving rotary disk intermittent rotation's a actuating mechanism, tamp and rotary disk fixed connection, a actuating mechanism is connected with the rotary disk, a actuating mechanism and rotary disk dustcoat are equipped with the protection casing, rotary disk and protection casing rotate about the center pin of rotary disk and are connected, protection casing fixed connection is used for driving tamping unit and inserts the driving piece of smashing the concrete along being close to or keeping away from the ground direction, driving piece fixed connection is in the frame.

By adopting the technical scheme, the slump bucket is placed on the rack, concrete is added into the slump bucket for three times, the total height of the concrete is equal to the height of the bucket, and the concrete needs to be tamped by a tamping bar after each addition; setting a driving part and a first driving mechanism to act alternately, starting the driving part, wherein the driving part can drive the tamping device to move towards the direction close to the ground, the tamping rod is inserted into the concrete and can be used for tamping the concrete, the driving part drives the tamping device to move towards the direction far away from the ground by driving a protective cover, the tamping rod leaves the concrete, then starting the first driving mechanism, the first driving mechanism can drive a rotating disc to rotate intermittently, the rotating disc drives the tamping rod to rotate to the next tamping point, the driving part continues to drive the tamping rod to tamp the concrete, and the concrete is inserted and tamped according to the steps and the specified times; after tamping, starting a driving piece to enable a tamping rod to be away from concrete, leveling the surface of the concrete, lifting a slump bucket, enabling the concrete to slump due to dead weight, measuring the height of the highest point of the collapsed concrete by using a measuring assembly, and determining the difference between the bucket height and the height as slump; the protective cover can not only enable the driving piece to drive the tamping device to move, but also reduce the damage of the external severe environment to the first driving mechanism; the concrete is tamped through the tamping device and the driving piece, so that the test error caused by manual insertion and tamping is reduced, and the accuracy of a measuring result is improved.

Preferably, the driving piece is a servo electric cylinder, an output shaft of the servo electric cylinder is fixedly connected with the protective cover, and a cylinder body of the servo electric cylinder is fixedly connected with the rack.

By adopting the technical scheme, the output shaft of the servo electric cylinder is fixedly connected with the protective cover, and the tamping device can be driven to move along the direction close to or far away from the ground, so that concrete is inserted and tamped; the servo electric cylinder can be set with a stroke at will, and can be started or stopped at any position, so that the operation is convenient and fast, and the practicability is high.

Preferably, the first driving mechanism comprises a grooved wheel, a driving plate, a shifting pin and a first motor, the grooved wheel is provided with a sliding groove and an inward concave locking arc which are uniformly distributed, the driving plate is in tangential rotation connection with the inward concave locking arc, the shifting pin is arranged on the driving plate and can be in radial sliding connection with the sliding groove along the grooved wheel, the grooved wheel is in coaxial fixed connection with the rotating disc, and the first motor is fixedly connected to the protective cover and is in coaxial fixed connection with the driving plate.

By adopting the technical scheme, the rotating disc needs to be paused frequently in the working process so that the driving piece drives the tamping device to carry out inserting and tamping on the concrete, if a direct driving mechanism such as a motor is only selected and needs to be paused frequently and restarted, the motor can be greatly damaged by long-time actions, so that an intermittently-driven outer sheave mechanism is adopted, if the first motor drives the driving plate to start continuous rotation, when the driving pin does not enter the sliding groove (normally opened in the radial direction to avoid axial force) of the sheave, the inner concave locking arc on the sheave is clamped by the driving plate, and the sheave is not moved; when the shifting pin is inserted into the sliding groove, the inward concave locking arc is just loosened, and the shifting plate drives the grooved wheel to rotate; when the shifting pin leaves the sliding groove from the other side, the concave locking arc is clamped again, the grooved wheel stops moving until the shifting pin enters the sliding groove next time, and unidirectional intermittent rotary motion is output in a circulating mode; the drive plate rotates continuously at a constant speed, the first motor does not need to be stopped frequently and then restarted, and the loss of the first motor can be reduced.

Preferably, the tamping rods are uniformly arranged along the radius direction of the rotating disk from the center to the outer edge of the rotating disk.

Through adopting above-mentioned technical scheme, the distribution of tamper makes each position of concrete all can receive to insert and smash, has improved the homogeneity of inserting and smashing.

Preferably, the rapid measuring instrument further comprises a jolt ramming device, the jolt ramming device comprises a pendulum bob, a fixed shaft and a second driving mechanism for driving the hammer head of the pendulum bob to reciprocally knock the outer wall of the slump bucket, the second driving mechanism is fixedly connected to the frame, one end of the fixed shaft is fixedly connected with the frame, the other end of the fixed shaft is rotatably connected with the pendulum bob, so that the fixed shaft and the pendulum bob form a lever structure, the pendulum bob is fixedly connected with the frame through a reset spring, the second driving mechanism is contactably connected with the pendulum bob, and the contact position of the second driving mechanism and the pendulum bob and the connection position of the pendulum bob and the reset spring are respectively located on two sides of the pendulum bob.

Through adopting above-mentioned technical scheme, fixed axle one end and frame fixed connection, the other end rotates with the pendulum and is connected to this pendulum forms lever structure with the fixed axle, and second actuating mechanism can contact with the pendulum and be connected, and the contact position of second actuating mechanism and pendulum and the hookup location of pendulum and reset spring are located the pendulum both sides respectively. The second driving mechanism is started, the pendulum bob swings towards the direction close to the slump bucket after contacting with the second driving mechanism and then swings towards the direction far away from the slump bucket, according to the lever principle, the hammer head of the pendulum bob swings towards the direction close to the slump bucket to knock the outer wall of the slump bucket, the reset spring extends, when the second driving mechanism is not contacted with the pendulum bob, the pendulum bob can return to the initial position under the elastic action of the reset spring and far away from the slump bucket, the actions are repeated, the pendulum bob can swing back and forth under the driving action of the second driving mechanism and the reset spring, so that the outer wall of the slump bucket is knocked regularly, and even if concrete close to the bucket wall in the slump bucket is not easy to be inserted and smashed by the tamping bar, the concrete can also be vibrated by the jolt device to be stacked more tightly, so that the accuracy of a measuring result is improved.

Preferably, the second actuating mechanism includes dwang and second motor, second motor fixed connection is in the frame, the main shaft and the dwang of second motor are connected, just the central line of dwang sets up with the main shaft axial contained angle of second motor, the dwang can contact with the pendulum and be connected with one side that reset spring was kept away from.

Through adopting above-mentioned technical scheme, the dwang can be driven by the second motor and rotates, and the dwang is at the uniform velocity and rotates, can make the pendulum swing strike slump bucket when contacting the pendulum, and the pendulum playback when keeping away from the pendulum for the pendulum reciprocates and strikes slump bucket outer wall.

Preferably, the rapid analyzer further comprises a lifting device, the lifting device comprises a lead screw, a nut, a clamping block, a nut seat and a third motor for driving the lead screw to rotate, the third motor is fixedly connected to the rack and coaxially and fixedly connected with the lead screw, the nut is in threaded connection with the lead screw, the nut is fixedly connected with the clamping block through the nut seat, the nut seat is connected with the rack in a sliding manner along a direction close to or far away from the third motor, and the clamping block is fixedly connected with the slump bucket.

Through adopting above-mentioned technical scheme, the third motor can drive the lead screw at the uniform velocity and rotate, nut and lead screw threaded connection, nut seat and nut fixed connection and with the frame slide and be connected, the nut can be along with the turned angle of lead screw according to the helical pitch conversion of corresponding specification linear motion, the clamp splice passes through nut seat and nut connection to realize the linear motion of clamp splice, clamp splice and slump bucket fixed connection can drive the slump bucket and move to the direction of being close to or keeping away from ground.

Preferably, the measuring component includes scale and scale that marks, scale fixed connection is in the frame, the scale slides along the direction that is close to or keeps away from ground with the scale and is connected, the scale can contact with the concrete and be connected.

By adopting the technical scheme, after the slump bucket is lifted, the concrete collapses due to dead weight, the scale is connected with the measuring scale in a sliding manner, the scale is moved to the highest point of the collapsed concrete to be contacted with the concrete, the scale of the contact position of the scale and the measuring scale is the height of the highest point of the collapsed concrete, the difference between the height of the slump bucket and the height is the slump, the error of visual measurement on a measurement result is reduced by the arrangement of the scale, and the accuracy of the measurement result is improved.

Preferably, the dipperstick has seted up the groove of sliding along the direction of being close to or keeping away from ground, scale fixedly connected with slider, the slider slides with the groove of sliding and is connected, the one end opening setting on ground is kept away from in the groove of sliding.

Through adopting above-mentioned technical scheme, the one end opening setting on ground is kept away from to the groove that slides, and with the dipperstick cooperation when making things convenient for the scale to use, then detachable scale reduces the influence to other work components when not using the scale.

Preferably, a height limiting block is arranged on the inner wall of the barrel opening of the slump barrel.

Through adopting above-mentioned technical scheme, the setting of high stopper can do certain restriction to the loading of concrete to confirm the initial height of concrete.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the concrete is tamped by the tamping device and the driving piece, so that the test error caused by manual tamping is reduced, and the accuracy of the measurement result is improved;

2. the arrangement of the jolt ramming device enables the concrete in the slump bucket to be regularly vibrated, so that the compactness of concrete accumulation is improved, and the accuracy of a measuring result is improved;

3. due to the arrangement of the scale, the error of the visual measurement on the measurement result is reduced, and the accuracy of the measurement result is improved;

4. the arrangement of the height limiting block can limit the filling amount of the concrete to a certain extent so as to determine the initial height of the concrete.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a partial structural view of the measuring assembly of the present embodiment;

FIG. 3 is a schematic structural view of the tamping device of the present embodiment;

FIG. 4 is a schematic structural diagram of the jolting device of the present embodiment.

Description of reference numerals: 100. a frame; 110. a fixed seat; 120. a first vertical plate; 130. a second vertical plate; 140. a fixing plate; 141. a chute; 200. a slump bucket; 210. a height limiting block; 300. a tamping device; 310. tamping; 320. rotating the disc; 330. a first drive mechanism; 331. a grooved wheel; 332. a dial; 333. pulling a pin; 334. a first motor; 335. a sliding groove; 336. a concave locking arc; 340. a protective cover; 400. a measurement assembly; 410. measuring a scale; 411. a sliding groove; 420. a scale; 421. a slider; 500. a drive member; 510. an output shaft; 520. a cylinder body; 600. a jolting device; 610. a pendulum bob; 620. a second drive mechanism; 621. rotating the rod; 622. a second motor; 630. a fixed shaft; 640. a return spring; 700. a lifting device; 710. a lead screw; 720. a nut; 730. a third motor; 740. a clamping block; 750. and a nut seat.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses concrete slump rapid determination appearance. Referring to fig. 1, the rapid-determination apparatus includes a chassis 100, a slump bucket 200, a measuring assembly 400, and a lifting device 700.

The rack 100 includes a fixing seat 110, a first vertical plate 120 and a second vertical plate 130, wherein the first vertical plate 120 and the second vertical plate 130 are perpendicular to and welded to the fixing seat 110, and the first vertical plate 120 and the second vertical plate 130 are perpendicular to and welded to each other. The slump bucket 200 is placed on the fixing base 110, and a height limiting block 210 is welded on the inner wall of the mouth of the slump bucket 200.

The rack 100 further includes a fixing plate 140 disposed along the vertical direction, and a sliding slot 141 is formed in the fixing plate 140 along the vertical direction. The lifting device 700 includes a lead screw 710, a nut 720, a third motor 730, a clamp block 740, and a nut holder 750. The lead screw 710 is disposed in the sliding groove 141 and rotatably connected to the side wall of the sliding groove 141, one end of the lead screw 710 penetrates through the sliding groove 141 and is coaxially welded to an output shaft of the third motor 730, and the third motor 730 is fixedly connected to the fixing base 110 through a bolt.

The nut 720 is in threaded connection with the lead screw 710, the nut seat 750 is welded on the outer wall of the nut 720, and the third motor 730 is started, so that the nut seat 750 is connected with the sliding groove 141 in a sliding manner along the direction close to or far away from the third motor 730 under the limiting action of the fixing plate 140 and the driving action of the lead screw 710. One end of the clamp block 740 is screwed to the nut seat 750, and the other end is welded to the slump bucket 200.

Referring to fig. 1 and 2, the measuring assembly 400 includes a measuring scale 410 and a scale 420, and the measuring scale 410 is marked with scales and welded to the fixing base 110. The dipperstick 410 has seted up sliding groove 411, and the one side welding that scale 420 is close to dipperstick 410 has slider 421, and slider 421 slides with sliding groove 411 along the direction that is close to or keeps away from fixing base 110 and is connected. The sliding slot 411 is opened at one end far away from the ground so as to take the lower ruler 420. The scale 420 is contactably connected to the concrete.

Referring to fig. 1 and 3, the rapid analyzer further includes a tamping device 300, the tamping device 300 includes a plurality of tamping rods 310, a rotating disc 320 and a first driving mechanism 330, the first driving mechanism 330 is used for driving the rotating disc 320 to rotate intermittently, in this embodiment, 3 tamping rods 310 are used, and each tamping rod 310 is welded on the rotating disc 320 and is uniformly arranged along the radius direction of the rotating disc 320 from the center to the outer edge of the rotating disc 320.

The first driving mechanism 330 includes a grooved wheel 331, a dial 332, a pin 333 and a first motor 334, the grooved wheel 331 has a sliding groove 335 and a concave locking arc 336 distributed uniformly, and in this embodiment, 4 sliding grooves 335 and 4 concave locking arcs 336 are adopted. The dial 332 is in tangential rotational connection with the concave locking arc 336, the dial pin 333 is welded on the dial 332 and is in radial sliding connection with the sliding groove 335 along the grooved wheel 331, and the grooved wheel 331 is in coaxial threaded connection with the rotating disk 320.

The grooved wheel 331, the dial 332, the shifting pin 333 and the rotary disk 320 are covered with a protective cover 340, and the rotary disk 320 and the protective cover 340 are rotationally connected about the central axis of the rotary disk 320. The first motor 334 is fixedly connected to the side of the shield 340 away from the rotary disk 320 by bolts and is coaxially screw-connected to the dial 332.

Be connected with on the protection casing 340 and be used for driving tamping unit 300 along being close to or keeping away from the driving piece 500 of ground direction insertion tamping concrete, driving piece 500 is servo electronic jar, servo electronic jar's output shaft 510 and protection casing 340 threaded connection, and servo electronic jar's cylinder body 520 welds on first riser 120.

Referring to fig. 1 and 4, the rapid measuring apparatus further includes a jolt device 600, the jolt device 600 includes a pendulum 610 and a fixed shaft 630, one end of the fixed shaft 630 is welded to the first vertical plate 120, and the other end is rotatably connected to the pendulum 610, so that the fixed shaft 630 and the pendulum 610 form a lever structure. Pendulum 610 is also welded with a return spring 640, and the end of return spring 640 distal from pendulum 610 is welded to second riser 130. The pendulum 610 is contactably coupled to the slump barrel 200.

The ram apparatus 600 further includes a second driving mechanism 620 for driving the ram of the ram 610 to reciprocally strike the outer wall of the slump bucket 200, and the second driving mechanism 620 includes a rotating rod 621 and a second motor 622. The second motor 622 is welded to the first riser 120. The rotating rod 621 is in threaded connection with the main shaft of the second motor 622, and the center line of the rotating rod 621 and the main shaft of the second motor 622 are axially arranged at an included angle. The rotating rod 621 is in contact connection with a side of the pendulum 610 away from the return spring 640.

The implementation principle of the concrete slump rapid tester in the embodiment of the application is as follows: the slump bucket 200 is placed on the fixing base 110, and concrete is added to the slump bucket 200 in three times. After concrete is added at each time, the servo electric cylinder and the first driving mechanism 330 are arranged to alternately act, the servo electric cylinder is started firstly, the servo electric cylinder drives the tamping device 300 to move towards the direction close to the ground, and the tamping rod 310 is inserted into the concrete to be capable of tamping the concrete. The servo electric cylinder drives the tamping device 300 to move towards the direction far away from the ground, and the tamping rod 310 leaves the concrete. Then, the first motor 334 is started, the first motor 334 drives the dial 332 to rotate continuously, when the pin 333 enters the sliding groove 335, the concave locking arc 336 is released, and the dial 332 drives the grooved wheel 331 to rotate. The grooved wheel 331 drives the rotating disc 320 to drive the tamper 310 to rotate to the next tamping point, when the shifting pin 333 leaves the sliding groove 335 from the other side, the concave locking arc 336 is clamped, the grooved wheel 331 stops moving, and the servo electric cylinder continues to drive the tamper 310 to tamper with the concrete. And (5) inserting and tamping the concrete according to the steps and the specified times.

After the tamping is finished, the second motor 622 is started, the rotating rod 621 is driven to rotate at a constant speed, the rotating rod 621 contacts the pendulum bob 610, the pendulum bob 610 swings to knock the outer wall of the slump bucket 200, when the rotating rod 621 is far away from the pendulum bob 610, the pendulum bob 610 returns under the elastic force action of the reset spring 640, the pendulum bob 610 can regularly and repeatedly knock the outer wall of the slump bucket 200, and the concrete is more tightly stacked under the vibration action.

After repeating the action more than three times, the concrete is added and tamped, the surface of the concrete is leveled and is parallel and level with the height limiting block 210, and the height of the height limiting block 210 from the fixed seat 110 is barrel height. Then, the third motor 730 is started, and the nut 720 drives the clamping block 740 to drive the slump bucket 200 to move in a direction away from the fixing seat 110, so that the concrete collapses due to self weight. Assembling the scale 420 on the measuring scale 410, moving the scale 420 to the highest point of the concrete, recording the scale of the contact position of the scale 420 and the measuring scale 410, and obtaining the difference value of the barrel height and the height as the slump.

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

1. The utility model provides a concrete slump short-term test appearance which characterized in that: the concrete height measuring device comprises a rack (100), a slump bucket (200), a tamping device (300) and a measuring assembly (400) for measuring the concrete height, wherein the slump bucket (200) is placed on the rack (100), the measuring assembly (400) is fixedly connected to the rack (100), the tamping device (300) is positioned on one side, away from the ground, of the slump bucket (200), the tamping device (300) comprises a plurality of tamping rods (310), a rotating disk (320) and a first driving mechanism (330) for driving the rotating disk (320) to rotate intermittently, the tamping rods (310) are fixedly connected with the rotating disk (320), the first driving mechanism (330) is connected with the rotating disk (320), a protective cover (340) is arranged outside the first driving mechanism (330) and the rotating disk (320), and the rotating disk (320) is connected with the protective cover (340) in a rotating mode about the central axis of the rotating disk (320), the protective cover (340) is fixedly connected with a driving piece (500) used for driving the tamping device (300) to insert and smash concrete along the direction close to or far away from the ground, and the driving piece (500) is fixedly connected to the rack (100).

2. The rapid concrete slump tester according to claim 1, wherein: the driving piece (500) is a servo electric cylinder, an output shaft (510) of the servo electric cylinder is fixedly connected with the protective cover (340), and a cylinder body (520) of the servo electric cylinder is fixedly connected with the rack (100).

3. The rapid concrete slump tester according to claim 1, wherein: the first driving mechanism (330) comprises a grooved wheel (331), a driving plate (332), a driving pin (333) and a first motor (334), the grooved wheel (331) is provided with a sliding groove (335) and an inward concave locking arc (336) which are uniformly distributed, the driving plate (332) is in tangential rotating connection with the inward concave locking arc (336), the driving pin (333) is arranged on the driving plate (332) and can be in radial sliding connection with the sliding groove (335) along the grooved wheel (331), the grooved wheel (331) is coaxially and fixedly connected with the rotating disc (320), and the first motor (334) is fixedly connected to the protective cover (340) and is coaxially and fixedly connected with the driving plate (332).

4. The rapid concrete slump tester according to claim 3, wherein: the tamping rods (310) are uniformly arranged along the radius direction of the rotating disc (320) from the center to the outer edge of the rotating disc (320).

5. The rapid concrete slump tester according to claim 1, wherein: the rapid tester also comprises a jolt ramming device (600), the jolt ramming device (600) comprises a pendulum bob (610), a fixed shaft (630) and a second driving mechanism (620) for driving a hammer head of the pendulum bob (610) to strike the outer wall of the slump bucket (200) in a reciprocating manner, the second driving mechanism (620) is fixedly connected to the frame (100), one end of the fixed shaft (630) is fixedly connected with the frame (100), the other end of the fixed shaft is rotatably connected with the pendulum bob (610), so that the fixed shaft (630) and the pendulum bob (610) form a lever structure, the pendulum bob (610) is fixedly connected with the frame (100) through the return spring (640), the second driving mechanism (620) is in contact connection with the pendulum (610), and the contact position of the second driving mechanism (620) and the pendulum (610) and the connection position of the pendulum (610) and the return spring (640) are respectively located on two sides of the pendulum (610).

6. The rapid concrete slump tester according to claim 5, wherein: second actuating mechanism (620) includes dwang (621) and second motor (622), second motor (622) fixed connection is on frame (100), the main shaft and dwang (621) of second motor (622) are connected, just the central line of dwang (621) sets up with the main shaft axial contained angle of second motor (622), dwang (621) and pendulum (610) keep away from one side contactable connection that reset spring (640).

7. The rapid concrete slump tester according to claim 1, wherein: the rapid measuring instrument further comprises a lifting device (700), the lifting device (700) comprises a lead screw (710), a nut (720), a clamping block (740), a nut seat (750) and a third motor (730) for driving the lead screw (710) to rotate, the third motor (730) is fixedly connected to the rack (100) and coaxially and fixedly connected with the lead screw (710), the nut (720) is in threaded connection with the lead screw (710), the nut (720) is fixedly connected with the clamping block (740) through the nut seat (750), the nut seat (750) is in sliding connection with the rack (100) along the direction close to or far away from the third motor (730), and the clamping block (740) is fixedly connected with the slump barrel (200).

8. The rapid concrete slump tester according to claim 1, wherein: the measuring component (400) comprises a measuring scale (410) and a scale (420) which are marked with scales, the measuring scale (410) is fixedly connected to the rack (100), the scale (420) is connected with the measuring scale (410) in a sliding mode along the direction close to or far away from the ground, and the scale (420) can be in contact connection with concrete.

9. The rapid concrete slump tester according to claim 8, wherein: measuring scale (410) have been seted up groove (411) that slides along the direction of being close to or keeping away from ground, scale (420) fixedly connected with slider (421), slider (421) slide with groove (411) that slides and be connected, the one end opening setting on ground is kept away from in groove (411) that slides.

10. The rapid concrete slump tester according to claim 1, wherein: and a height limiting block (210) is arranged on the inner wall of the opening of the slump barrel (200).